12 Pack Bundle of First Alert Hardwired Smoke Alarm with Battery Backup - 9120B

Name: 12 Pack Bundle of First Alert Hardwired Smoke Alarm with Battery Backup - 9120B
Brand: First Alert
SKU: 9120B
Price: 136.20 USD
Availability: InStock
Rating: 5 (654 reviews)

Ionization Wired In Smoke Detector

Availability: In Stock

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- 654 Customer Reviews

Description
Installation
FAQs
Manuals
Video
Bulk

Hardwired Smoke Alarm with Battery Backup:

Designed to help promote household safety, the First Alert 9120B Hardwired Smoke Alarm with Battery Backup can provide a vital early warning of fire. This hardwired smoke detector uses an ionization smoke sensor to reliably detect smoke from hot, fast-flaming fires.

Ionization Sensor Reliably Detects Flaming Fires

The First Alert 9120B Hardwired Smoke Alarm with Battery Backup comes equipped with an ultra-reliable ionization sensor to provide the earliest possible warning of a fast-flaming fire. The sensor is optimized to detect flaming fires, such as those caused by paper, kitchen grease, and other fast-combusting materials.

Gasket-less for Easy Installation

To facilitate hassle-free installation, this smoke alarm features a streamlined mounting system with a gasket-less base. The mounting bracket keeps the alarm secure over a wide rotation range while maintaining perfect alignment. The alarm also comes with a dust cover to keep the unit clean during construction. AC-powered smoke alarms must be installed in accordance with all local electrical codes.

Battery Backup for Detection During a Power Outage

This smoke alarm is designed for hardwired installation, but it also features a battery backup that helps ensure continued functionality in the event of a power outage. The unit comes with a 9-volt battery and features a pivoting, easy-to-access battery drawer that allows you to replace the battery without dismounting the alarm.

Works in Tandem with Other First Alert Alarms

In addition to functioning independently, this smoke alarm can also integrate with up to 12 other First Alert or BRK hardwired alarms for coverage of larger spaces. It also integrates with up to six other compatible devices, such as bells, horns, and repeaters. If one alarm in the series is triggered, they will all sound. The alarm features a latching indicator to identify which unit triggered the alarm, alerting you to the area of danger.

First Alert Smoke Alarm 9120B

Recommended replacement for the following obsolete models:

BRK 4120B
BRK 4120SB
BRK 86RAC
First Alert SA4120B
First Alert SA4121B
First Alert SA4919B

Product Details

Ionization smoke sensor is optimal for detecting fast flaming fires.
Loud 85dB alarm.
Tamper resistant locking pins.
Single button silence/test.
120V AC power with 9V battery backup (included) to keep alarm functioning during power outage.
Open mounting design for easy installation with side load battery compartment for quick replacement.
Interconnectable up to 18 units (12 smoke, 6 CO/heat/relay).
Emits T3 Pattern.
10 Year Limited Warranty.
Product Dimensions (LxWxH): 5.6 x 1.9 x 5.6 in.
Product Weight: .60 lbs.

Product Specs

UPC:

029054513014

MPN:

9120B

Category:

Smoke Alarms and Smoke Detectors

How to Install First Alert 9120B Hardwired Smoke Alarms:

In this guide, we'll be showing you how to install First Alert Hardwired Smoke and Carbon Monoxide Alarms. Here are a few items you'll need before starting the installation process: Needle-nose pliers or utility knife, screwdriver, wire stripper, wire nuts and a ladder.

Hardwired Smoke or Carbon Monoxide Alarm Requirements:

120V household electrical circuit (unswitched 120VAC)
Standard wiring junction box to a 4 in. (10 cm) size, on either the ceiling or wall
Selecting an appropriate location to install your smoke and carbon monoxide alarms (see below guidelines for additional information):
- When installing an alarm on the wall, the top edge of an alarm should be placed between 4 in. (100 mm) and 12 in. (300 mm) from the wall/ceiling line.
- When installing an alarm on the ceiling, place the alarm as close to the center as possible.
- In either case, install the alarm at least 4 in. (100 mm) from where the wall and ceiling meet.
- First Alert Smoke Alarm FAQs
- First Alert Carbon Monoxide Alarm FAQs

Connecting First Alert Hardwired Alarms to 120V Wiring

To begin, turn off power at the junction box and connect your alarm to the building's electrical wiring.

Locate the junction box and turn off power
Remove the power connector from the new alarm's packaging
Using wire nuts, attach the hot (black), neutral (white), and interconnect (orange) wires

first alert smoke alarm hardwired install guide

first alert wired in smoke alarm install guide

Black wire
(hot)

Attach to black wire on power connector

White wire
(neutral)

Attach to white wire on power connector

Orange wire
(interconnect)

Standalone (single-station) alarm: This wire is not needed; tuck the orange wire into the junction box.

Interconnected alarms:

Strip 1/2 in. from the orange wire on the connector
Use a wire nut to attach it to the orange wire in the junction box (see image below).

Mounting First Alert Hardwired Alarms

Secure the mounting bracket to the ceiling or wall using screws (included in the package)
Insert the power connector into the plug on the back of your alarm
Tuck any hanging wires into the junction box
Position the base of the alarm onto the bracket and turn it clockwise until it's secured
Remove the pull-tab to activate the backup battery

first alert carbon monoxide alarm install guide

first alert smoke and co detector install guide

Installing Additional and/or Interconnecting First Alert Hardwired Alarms

If you are installing more smoke or carbon monoxide alarms, you'll want to repeat the process throughout the building. Interconnected smoke and co alarms must meet all requirements:

The same fuse or circuit breaker must power all interconnected alarms.
Up to 18 compatible detectors can interconnect, with a limit of 12 smoke alarms.
The total length of wire interconnecting the alarms should be less than 1,000 ft. (300 meters). This type of wire is commonly available at hardware and electrical supply stores.
All wiring must conform to all local electrical codes and NFPA 70 (NEC). Refer to NFPA 72, NFPA 101, and your local building code for more information.
Interconnect wiring diagram:

If you have any doubts or reservations about these interconnect requirements, please contact an experienced electrician to install your wiring and hardwired alarms.

Restoring Power and Testing Hardwired Alarms

Once you've installed your hardwired alarms, you'll want to restore power to the junction box. Under regular operation, the power indicator light on the alarm will shine/blink to indicate that it is receiving AC power.

Here's how you can test standalone or interconnected alarms:

Standalone Alarms: Press and hold the Test/Silence button until the unit triggers an alarm.
Interconnected Alarms: Press and hold the Test/Silence button until the first unit triggers an alarm. All interconnected detectors should sound off. Repeat this process to test each alarm in the interconnected series.

Q: What is the proper placement of smoke alarms?

A: It is important that you have the proper placement for your smoke alarms. Install your alarms at least 20 feet from appliances like furnaces and ovens, which produce combustion particles. Alarms should be at least 10 feet from high humidity areas like showers and laundry rooms, and at least 3 feet from heat/AC vents. Be sure to install a smoke alarm in each bedroom, one at the top of each stairwell, and one on every level.

Q: Why doesn't my smoke alarm sound when I push the test button?

A: It is important that you frequently test your smoke alarms. When you are testing your smoke alarm, there are a number of reasons why the alarm might not sound:

You may not be holding the test button down long enough. Try holding it down for up to 10 seconds (20 seconds on photoelectric models) .
Your battery may not be installed properly or snapped all the way in place. Even if the alarm sounded briefly when the battery touched the terminals, you still need to make sure it is snapped securely in place. If the battery is loose, in cannot power the smoke alarm properly. After installing new batteries, be sure to test your smoke detector.
Your AC power may not be on. AC and AC/DC units will have a power indicator light (red or green) that shines continuously when they are receiving electrical power.
If you have a 10-Year model, the smoke alarm may not have been properly activated. If the tab broke away before the alarm was activated, you can use a toothpick to move the switch over to test the alarm.

Q: Why does my smoke alarm go off when I install a battery or turn on the AC power?

A: It is normal for smoke alarms to go off and sound briefly (up to 5-10 seconds) when you install a new battery or when they are powered up. If the alarm continues to go off and no smoke is present, the cause may be one of the following:

There may be insufficient battery power, try new batteries.
Problems with voltage or insufficient electrical power (brown out) may cause a continuous weak sounding alarm. For AC or AC/DC models, temporarily disconnect power at the service panel until the brown out is over. If you do not restore the AC power, your smoke alarms cannot warn you of a fire.
Incompatible warning device. If an incompatible alarm or auxiliary device is linked into a series of AC or AC/DC smoke alarms it may cause the system inadvertently go off.

Q: I lost my First Alert smoke alarm owner's manual. How can I get a new one?

A: First Alert smoke alarm owner's manuals are available online for download at no cost. Find your alarm in our Smoke Alarms section.

Q: Why does the National Fire Protection Association (NFPA) recommend that home smoke alarms be replaced after 10 years?

A: Smoke alarms have a limited life. Although each smoke alarm and all of its parts have passed many stringent tests and are designed to be as reliable as possible, any of these parts could fail over time. Therefore, you must test the devices weekly. The unit should be replaced immediately if it is not operating properly. The performance of smoke alarms older than 10 years is simply not reliable. To ensure your family's safety, all carbon monoxide and smoke/CO combination alarms need to be replaced every 5-7 years. All smoke alarms need to be replaced every 10 years.

First Alert 9120B Alarm Manual

First Alert 9120B Hardwired Smoke Alarm with Battery Backup Videos

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Customer Reviews

5

Average score based on 654 reviews

Write A Customer Review

First Alert 9120B Hardwired Smoke Alarm with Battery Backup Reviews

- Reviewed: 01/19/2022 by John W

The First alert smoke Detectors are efficient and well worth the reasonable cost for safety!

- Reviewed: 01/08/2022 by Cheryl W

Came really fast.

- Reviewed: 01/04/2022 by Larry Bloom

Smoke alarm replacements

Installed easily works well with no issues.

- Reviewed: 12/28/2021 by Robert T

Top drawer service

Excellent response and fast delivery. These people were on top of the situation from the get-go.

- Reviewed: 12/28/2021 by Jim B

9120B - Jim B

Very Good, Support / Customer Service even better.

- Reviewed: 12/17/2021 by Edmund Z

Replacing old alarms

Had to replace the smoke detectors that had been in place since 87 when house was built after they failed to go off when we forgot to turn off a pot on the stove and the house filled with smoke. Opened up one of the old ones and found it was from First Alert so I went on their website and found a great deal on First Alert 9120B Hardwired Smoke Alarm with Battery Backup. Turned off the power and had all 3 swapped out in 15 minutes. Haven't had any event yet that would cause an alert, but they all joined together and seem to be operating as designed. Very happy with my purchase.

- Reviewed: 12/17/2021 by Jerry S

Very Good

- Reviewed: 12/17/2021 by Donald M

Customer service

I recently purchased 7 hard wire detectors to replace my very old detectors that came with our home. The person that took my order went out of her way to be sure that I was able to purchase a model that would be appropriate and at the best price possible.

- Reviewed: 12/16/2021 by Donald M

Customer service

- Reviewed: 12/13/2021 by James M

Very simple install

Simply plugs in and clicks into base.

- Reviewed: 12/12/2021 by Carmella W

Easy to install. All that is needed is wire stripper and Phillips screwdriver.

- Reviewed: 12/09/2021 by DALE

BRK 9120B

This was an easy swap over from an older First Alert model that is no longer available. The existing detector kept chirping even with a new battery. The existing base was not compatible with the new detector, but the new base fit perfect. The existing wiring and plug was a match, so I did not have to rewire anything either. When I tested the unit, it also triggered the other units in the house like it's supposed to. I will be replacing all the old smoke detectors with this unit.

- Reviewed: 12/06/2021 by John W

9120B Replacements

Your website was easy to use. Your shipment was fast. Design and installation was quick and easy. Great Job First Alert!!

- Reviewed: 11/27/2021 by kelli b

Great product!

Easy to install and completely reliable. Would definitely order this product again!!!

- Reviewed: 11/27/2021 by Willard M

simple install. Probably works

Easy install. No fire yet, so has not been properly tested, but seems trustworthy.

- Reviewed: 11/23/2021 by John W

first alert smoke detector

This product is easy to install. It only takes a minute to install. The ordering process from the company is seemless. Thank you. John W.

- Reviewed: 11/18/2021 by Gary B

Replacement Smoke detector

Ordered and received First Alert smoke detectors in a timely manner. Product is easy to install. Just unplug old one and plug in the new one. I did several installs for other people and they all worked to perfection.

- Reviewed: 11/18/2021 by David K

Smoke alarm order

Very pleased with my order. Received timely and order just as I placed.

- Reviewed: 11/14/2021 by Daryl M

Works like it should

Replaced same item that lasted 6 years that started beeping even with fresh batteries. Works great.

- Reviewed: 11/07/2021 by Sunp

Will buy again

Easy to install, Good quality product at best price

- Reviewed: 11/04/2021 by Bharat P

Works flawlessly

Super fast shipment and such an easy swap from the old to new and works perfectly once installed. No complaints

- Reviewed: 11/04/2021 by Bharat P

Works flawlessly

Super fast shipment and such an easy swap from the old to new and works perfectly once installed. No complaints

- Reviewed: 11/02/2021 by Cyd D

Did the job

The alarms arrived promptly and my husband was able to easily install them. These were replacements for our others, that were 20 years old one “expired”, so we just updated all three. Good product, well buy them again…hopefully in another 20 years!

- Reviewed: 11/01/2021 by Thomas C

smoke alarm

so glad that I could get the same replacement after ten years and at the lowest price

- Reviewed: 11/01/2021 by Christopher P

Smoke Alarm Updates

Purchase prices was super simple- when I got the package since I had a similar kind already installed from 1999 Recently purchased the home, don't judge! I was able to pop the new ones in and took less than 2 minutes a piece. Now all are updated and good for another 10 years !

- Reviewed: 11/01/2021 by Zhiyue L

Very fast shipping and Good product

Unexpected fast.

- Reviewed: 10/31/2021 by Michael M

Easy order Easy Install

I bought a 6 pack, it was easy to order from First Alert, easy to install, and at a great price.

- Reviewed: 10/28/2021 by Irma N

Perfect match

Needed to replace hard wired detector , glad I was able to find the exact match 💯%

- Reviewed: 10/28/2021 by Nancy G

easy to install and good cusotmerservice

- Reviewed: 10/28/2021 by Ken A

Smoke alarm

Very easy to install

- Reviewed: 10/27/2021 by Thomas S

Just what I needed

Perfect. Had an older one of these in my house that was broken, needed a replacement but didn't want to have to rewire. Found this online and it fit perfectly. Now I have an operable smoke alarm to help keep my family safe.

- Reviewed: 10/26/2021 by Pete B

Just what I ordered!

Products were properly pulled from the shelf and sent. Arrived in good shape and the 6 units replacements for existing were installed the next day and found to be working. I highly recommend this retailer.

- Reviewed: 10/25/2021 by JG

9120B

Replaced some 15 year old smoke detectors. Very easy to do. They were the same model. Shipping was fast. Overall great transaction.

- Reviewed: 10/23/2021 by Jerry

Works fine

- Reviewed: 10/21/2021 by Thomas P

Needed New

Tested out great the first night of installation! After snoozing off & cooking a pizza. Nice & Loud !!! Dog didn't seem to like the new sound though it helped in waking me. The one replaced didn't even have a test button. So old?

- Reviewed: 10/21/2021 by Larry W

9120B Review

Out of the box with battery installed I just unplugged the old unit and plugged in the replacement. This was as simple as it gets.

- Reviewed: 10/18/2021 by Donovan H

Perfect

This was a replacement unit and was easy to fit. Excellent price as well. Very pleased.

- Reviewed: 10/12/2021 by Edwin B

Smoke Alarm replacement

Replaced 6 detectors with new ones. Easily done!

- Reviewed: 10/05/2021 by Amer A

It Is very good, the sound is very good and has a battery, the important this is we can connected together, if any start the alarm all the rest will start the alarm.

- Reviewed: 10/04/2021 by Arvid N

Excellent customer service

Excellent service and timely delivery.

- Reviewed: 10/04/2021 by Laurie P

Easy Install

Had to rewire unit but very easy. Unit was slightly larger than the original so no paint touch up.

- Reviewed: 09/30/2021 by Michael N

Great replacement product!

I replaced 16 year old smoke that are hot wired and these were truly easy to install. Simply had to unplug the wire harness from the old alarm, plug the new one into the wire harness and replace the battery.

- Reviewed: 09/30/2021 by Ric N

Purchased as replacements

My six original First Alert wired smoke alarms were 15 years old and needed to be replaced. I bought the six pack. These were exact replacements, so I unscrewed and detached the old, plugged in the new and screwed them in, pulled the plastic battery covers and boom! Done. Easy peasy. Now I'm good for another 10 to 15 years although documentation says replacement should be in 10.

- Reviewed: 09/30/2021 by Luis O L

Excellent Service!

Great Customer service!

- Reviewed: 09/29/2021 by Michael N

So far so good

Wires up easy. Simple no frills alarm.

- Reviewed: 09/29/2021 by Michael N

So far so good

Wires up easy. Simple no frills alarm.

- Reviewed: 09/27/2021 by Lewis N

Smoke Alarm

Just what I was looking for and very fast shipping. Would recommend buying here.

- Reviewed: 09/25/2021 by Yujie H

First Alert 9120B Hardwired Smoke Alarm with Battery Backup

We like the product. It is easy to replace my old one with the new one.

- Reviewed: 09/24/2021 by Raymond G

Worked perfectly

Replaced my old First Alerts with these newer ones. Easy swap with the same plugs.

- Reviewed: 09/23/2021 by Raymond G

Worked perfectly

Replaced my old First Alerts with these newer ones. Easy swap with the same plugs.

- Reviewed: 09/17/2021 by Phil M

Smoke Alarm

I was very happy with my experience buying the 9120B 6 pack from the First Alert Store . The price was great, the shipping was fast, and for me the installation was easy. The product seems solid and even came with batteries installed. I would recommend these guys to anyone .

- Reviewed: 09/16/2021 by Tom D

Next day arrival

I ordered the replacement smoke alarm Thursday. It arrived on Friday.

- Reviewed: 09/09/2021 by Luis O L

Fast and smooth transaction!

Fast shipping and quick transaction.

- Reviewed: 09/09/2021 by Jeff J

Best price I could find. Easy to order online. No shipping. It was here in two days. Incredible.

- Reviewed: 09/08/2021 by Ingle P

Direct Purchase

It was good experience purchasing the smoke alarm directly from the manufacturer with free shipping.

- Reviewed: 09/07/2021 by HARMANBHAI P

good services

- Reviewed: 09/07/2021 by Glenn B

I was very pleased with the service and timely delivery of this product. They installed perfectly. The price was vert compatible with local purchase. Thank You

- Reviewed: 09/06/2021 by Steven L

Excellent in every aspect

Everything about this transaction exceeded my expectations. Fast shipping. Accurate order. Easy install. A pleasure to deal with.

- Reviewed: 09/06/2021 by Jerry N

Smokin with flame out

Product worked great, except some of the batteries were dead. Not a problem, everything working fine.

- Reviewed: 09/04/2021 by Tracy D

They was ship early also easy to install

- Reviewed: 09/01/2021 by Robert C

6 pack smoke alarms

Quick delivery, easy to install, and appears to work fine

- Reviewed: 09/01/2021 by Bob C

Time to Replace Smoke Detectors

When my smoke detectors started chirping constantly, I didn't know if my order would arrive in time but it did and reinforced the need to replace the smoke detectors every 10 years.

- Reviewed: 08/30/2021 by Ellen D

Easy to replace

Was an exact replacement for mine. I had one go out at the 9.5yr mark so I'm replacing all of them recommended at 10yrs anyway. The shipping was free abs lightning fast!

- Reviewed: 08/30/2021 by Matthew S

Smoke alarms

Happy with purchase. Items were consistent with description on website. Thanks Matthew

- Reviewed: 08/30/2021 by David M

First Alert 9120B Replacement

I was replacing an old detector and the replacement worked perfectly. I was able to unscrew the old detector from the base, unscrew the new detector from its base and screw it into the old base without any problem. Works perfectly !

- Reviewed: 08/30/2021 by NT

Easy to install and replace

Had to replace old alarm that was malfunctioning. This one came quickly and was simple to install.

- Reviewed: 08/27/2021 by Susan Ottobre

Smoke detectors

We were very pleased with everything. The information, quality, and quickness of the delivery.

- Reviewed: 08/27/2021 by Jennifer M

Perfect with fast shipping & a great price

We needed to replace one of these from our original monitoring system, and this one worked perfectly. Also, the shipping was super fast and the price was unbeatable!

- Reviewed: 08/24/2021 by George M

/all items ordered were delivered in good shape as promised. I would use your company again. George Mattern

- Reviewed: 08/23/2021 by Martin C

Great price

Great price, quick delivery and replaced my expired model perfectly.

- Reviewed: 08/20/2021 by Ming Z

Working product

Easy to install and comes with battery

- Reviewed: 08/19/2021 by Price G

Works well

Little disappointed that I had to replace the detectors that were installed when the house was built 3 years ago. Replacement of batteries did not work and had to replace units - 2 of them so far.

- Reviewed: 08/18/2021 by Shay G

Excellent

I enjoyed it very much and the price was unbelievable

- Reviewed: 08/17/2021 by Ben B

first alert smoke detector

recd quickly and installed same. Very easy to replace.

- Reviewed: 08/16/2021 by Brent B

5 Star in every way

Replaced all smoke heads in the house. These are hardwired w/ battery backup in case of power outages. Installation is simple and they work great providing excellent protection and peace of mind. The First Alert Store - which I found when researching new alarms - has excellent prices and their customer service is outstanding and shipping is fast too.

- Reviewed: 08/13/2021 by Louis B

First Alert 9120B Hardwired Smoke Alarm with Battery Backup

excellent product, easy install, covers ring left by prior smoke alarm, very pleased

- Reviewed: 08/09/2021 by Zoe H

Smoke alarm

The new smoke detectors worked great and fit into the same faceplate as my older ones.

- Reviewed: 08/09/2021 by Zoe H

Smoke alarm

The new smoke detectors worked great and fit into the same faceplate as my older ones.

- Reviewed: 08/03/2021 by ED C

FIRST ALERT IS SUPER STORE

outstandingly fast in shipping

- Reviewed: 08/03/2021 by GARY B

First Alert Smoke Alarms

First of all, the price was very reasonable. I had to replace 7 units in my vacation home when all of the older models started going bad. I thought I would have a huge expense but it was very manageable. The replacement units included new brackets and wires that weren't needed since they were able to be mounted into the existing brackets. A great time saver. Everything went very smooth and easy.

- Reviewed: 07/30/2021 by michael h

SC9120B Replacement

It fit my old bracket and I replaced it in minutes.

- Reviewed: 07/28/2021 by Crystal S

Smoke Detectors

Very quick service

- Reviewed: 07/18/2021 by SHIYAN P

Very good

Very good.

- Reviewed: 07/12/2021 by Diane H

Exact fit as old

Easy to order and exact fit for replacement

- Reviewed: 07/12/2021 by Diane H

Exact fit as old

Easy to order and exact fit for replacement

- Reviewed: 07/12/2021 by Nancy B

Smoke Alarm

Good product delivered in a timely manner

- Reviewed: 07/01/2021 by JAIME C

first alert hardwired smoke alarm 9120B

EXCELLENT ITEM !!!

- Reviewed: 06/30/2021 by Jon E

Easy to swap detector

Bought this to replace a previously installed detector of the same model. Very easy. Simply unplugged the old one and plugged in the new one. Done in less than five minutes!

- Reviewed: 06/28/2021 by Ravi S

First Alert Hardwired Smoke Alarm with Battery Backup - 9120B

I had no issues with this product. I had purchased many First Alert Smoke Alarm products and a couple of Carbon Monoxide detector products. Highly recommend these products.

- Reviewed: 06/28/2021 by Mary G

Smoke Detectors

Placed my order and received it quickly. Website was easy to navigate and the entire experience was great!

- Reviewed: 06/18/2021 by James R

Easy Transaction

Easy Transaction & Great Price. Quality Products.

- Reviewed: 06/16/2021 by Rose P

Making Home Safe

It was time to replace my 10 year old smoke alarms. This is a great deal for smoke alarms and should last me up to 10 more years.

- Reviewed: 06/16/2021 by Glen D

Works as indicated.

- Reviewed: 06/15/2021 by Jon E

Replacement detector

Bought this to replace a 15-year old detector same model that was installed in my home. Didn't have to change any of the mounting or wires, so it was a very easy replacement.

- Reviewed: 06/15/2021 by John O

Superb Smoke Detectors

Excellent product. This is my third set and each previous set lasted the full warranted 10 years with just annual battery replacement. I only replaced the this last set because they are exactly 10 years old and that is the expected healthy life of the units. Would not think of using another brand!

- Reviewed: 06/11/2021 by Daniel S

Fianlly, a quality smoke alarm

I bought these because ever since building my home I had false alarms regularly. I did everything I could to get the original fire alarms working right, new backup batteries, checked wiring, verified placement etc... I bought these, bought the best Li batteries I could find to replace the OEM alkalines that came with them and installed 11 units wired together. No issues. Also, my wife tested them with her cooking, so they work and reset easily.

- Reviewed: 06/10/2021 by Rhonda C

Fast Service

Great price and fast delivery

- Reviewed: 06/07/2021 by Robert L

replacement fire alarms

The order came quickly and the order went smoothly.

- Reviewed: 06/01/2021 by Thuy T

Easy to replace

good hardware last 7 years.

- Reviewed: 05/31/2021 by Young J

Quick and easy

Quick and easy! It will be nicer though if the functionality of its operations can be either AC or AC plus battery. It appears that it is designed to be AC and battery thus requiring battery to be replaced when it gets low with the recurring chirps. Then again, if the regulations call for the mandatory battery backup to exist, my preference would be invalid.

- Reviewed: 05/26/2021 by Daniel H

9120B

Great product

- Reviewed: 05/24/2021 by Dennis S

Shep

very good product, quick delivery

- Reviewed: 05/19/2021 by Dan B

updated my alarms

Replacing old alarms with identical new ones. Fit perfectly into previous spot and now, with long life batteries, I shouldn't have to change batteries for awhile!

- Reviewed: 05/17/2021 by Donald S

I use this unit in all of my 21 unit apartments and am very satisfied with the dependability this product offered.

- Reviewed: 05/17/2021 by Youssouf I

Great product! Fast shipping!

The product came with all accessories and batteries. It was the exact replacement. I did even have to use the cables and fixtures it came with. I am very happy with the product and the price!

- Reviewed: 05/11/2021 by Katrin B

Very easy install

We replaced our way outdated Model 4120 smoke alarms with these. Replacing the bezel to mount them was very easy and straightforward.

- Reviewed: 05/10/2021 by Kevin W

Detectors

Good detectors!

- Reviewed: 05/04/2021 by Rose C

Great Product!

So happy to find this fire alarm package. So easy to install and it shipped out very quickly to me. I am very pleased!

- Reviewed: 04/29/2021 by Eric C

Excellent Product

It arrived quickly and was easy to install.

- Reviewed: 04/27/2021 by Gregory W

Smoke Alarms

I/we were VERY PLEASED with the SERVICE and the replacement alarms that were ordered. We reside in a retirement community that is 17 years old and since receiving and installing our alarms, I have advised many of our friends and neighbors to order and replace their old alarms by contacting your First Alert Store.

- Reviewed: 04/26/2021 by Brian L

Excellent Customer Service

I called a representative to find out what hard wired smoke alarm he had to replaced my 20 year old discontinued model! The rep was was very informative & gave me the info I requested! I received it the smoke alarm a few days later & installation was simple !

- Reviewed: 04/23/2021 by Vincent C

First Alert Purchase

The First Alert 9120 B Hardwired smoke Detector arrived on time and instructions were easy to digest. The price beat Lowes prices.

- Reviewed: 04/20/2021 by Stephen L

Great inexpensive smoke alarm!

I recently bought a home that still had the original Kidde/FireX smoke detectors from 2002! I ordered these First Alert 9120B because I liked the value and trusted the brand. Installation went smoothly without any issues. I had to remove the existing wire nuts to replace the wire adapter going from Kidde to First Alert. That took a little more time but wasn't too difficult. These 9120B have worked great so far and no issues with false alarms at all. I would recommend these to friends and family.

- Reviewed: 04/19/2021 by Jody G

9120B smoke alarm

We were very happy with the purchase experience. And was happy with the advice I received from your Customer Service Rep prior to me deciding to place my order

- Reviewed: 04/18/2021 by Tom E

Gtreat store - great products

Love these hard-wired smoke detectors.

- Reviewed: 04/17/2021 by Thomas F

smoke alarm

order was on time and good condition

- Reviewed: 04/10/2021 by Allen K

Smoke Alarm

I have been using these alarms for more than 20 years. They have generally been good.

- Reviewed: 04/10/2021 by Paul L

Easy Install

Fits smoothly on prior alarms set screws. Install took 3 minutes. Battery included.

- Reviewed: 04/01/2021 by JAMES R

First Alert 9120B Hardwired Smoke Alarm with Battery Backup

Excellent replacement for both of my outdated smoke alarms.

- Reviewed: 03/30/2021 by James E

ALWAYS BUY DIRECT!

XLNT price, XLNT service and EASY to follow instructions! Installed in less than 1/2 hour! THANK YOU!

- Reviewed: 03/26/2021 by Eric V

Easy install- reliable

Had to replace our hardwired detectors that had long expired. First Alert was the first name that came to mind and they didnt disappoint. Their price was unbeatable, shipping was very quick and installation was a breeze. I was done replacing all the detectors in the house in under a half hour. Very satisfied!

- Reviewed: 03/25/2021 by David P

Just a described

This was just a described and fit perfectly. It even came with a battery already installed.

- Reviewed: 03/23/2021 by William D

Excellent online source

My order was placed with the FIrst Alert Store due to favorable pricing and accurate, useful information on product compatibility. Order fulfillment was both accurate and exceptionally fast. First class operation - worthy of your confidence!

- Reviewed: 03/23/2021 by Kathleen C

Great

Easy to install and keep clean..never have an issue with these. Would recommend to all

- Reviewed: 03/22/2021 by Thomas M

Replace unit

Very easy to take old unit off and put new unit on. I wish they sold just the unit without the housing and wire at a reduced price. Thanks

- Reviewed: 03/22/2021 by Thomas M

Replace unit

Very easy to take old unit off and put new unit on. I wish they sold just the unit without the housing and wire at a reduced price. Thanks

- Reviewed: 03/22/2021 by Eric V

Easy install- reliable

Had to replace our hardwired detectors that had long expired. First Alert was the first name that came to mind and they didn't disappoint. Their price was unbeatable, shipping was very quick and installation was a breeze. I was done replacing all the detectors in the house in under a half hour. Very satisfied!

- Reviewed: 03/21/2021 by Loren S

First Alert 9210B hardwired-battery - Excellent

I needed to replace my expired First Alert after over 10 years of use. Easy install of same newer version. Highly recommended.

- Reviewed: 03/18/2021 by Rick M

Easy purchase

Easy to order at a very good price

- Reviewed: 03/18/2021 by matthew s

simple and good

had to replace old First Alert alarms that served us well, and these worked perfectly simply attaching to the old wiring.

- Reviewed: 03/18/2021 by Jeffrey Juszynski

Smoke Alarms

Exact replacement! Replaced all my smoke alarms. Quick shipping.

- Reviewed: 03/18/2021 by Dean Bozman

6 pack of smoke detectors

The pack of smoke detectors arrived as promised. They were easy to install and work perfectly. I would buy again from their website.

- Reviewed: 03/15/2021 by Wendell Young

Products as advertised easy to install Customer service is excellent.

- Reviewed: 03/13/2021 by DANIEL MOLONEY

Perfect

Worked perfectly, and best price online.

- Reviewed: 03/11/2021 by Aishwarya Raju

Smoke Detectors

Very Good

- Reviewed: 03/10/2021 by Daniel Campbell

Good and Bad

The item was as advertised but the shipping was painfully slow. I blame this on the carrier used , as I tracked the item it was stagnant for several days at a warehouse.

Customer Service Response:

We apologize for the delay, Mr. Campbell. We'll be contacting the carrier involved to make sure it does not happen again.

- Reviewed: 03/10/2021 by Erin Rahn

Easy install, fast ship

Very easy to install, good price and a fast ship

- Reviewed: 03/09/2021 by Vu Nguyen

First Alert Hardwired 9120B

I had to replace 7 of the 9120 model smoke alarms that were installed by the builder 15 years ago. The replacement alarms fit perfectly and it literally take a minute to install each alarm. I'm very happy with the purchase as it saves me $$$.

- Reviewed: 03/06/2021 by David Brown

6 New 9120B Smoke Alarms

I received my 6 smoke alarms as stated on my order. Very securely packed and shipped as I expected. Instructions were included and very easy to follow replacement guidelines for older smoke alarms. Very pleased with the product and the quality. Installed very easily.

- Reviewed: 03/05/2021 by Larry Driskill

Replaced our alarms

Our house is now well over 10 years old and the smoke alarms needed replacing. I was able to get the same model alarms from First Alert and that made the switch out easy. Delivery was quick and the order was complete. Full marks.

- Reviewed: 03/05/2021 by Jasbinder Kooner

Hard wire smoke alarm

Ordered smoke detectors for my home, very easy to place orders shipped quickly and very easy to install. Excellent service and product!

- Reviewed: 03/04/2021 by Aniello Moscato

Outstanding

Great service. Immediate delivery.

- Reviewed: 03/04/2021 by LAWRENCE REESE

Easy install

I bought the 6 pack to swap out old smoke detectors. The wiring harness was exactly the same allowing me to change to the new mounting plate after unplugging the old ones, and simply plug in the new ones easily. Very pleased. Easy to do.

- Reviewed: 03/04/2021 by Hayley Brady

Amazing and easy install

So easy to install. Works great

- Reviewed: 03/03/2021 by JAMES IVANCIK

Good all around smoke alarm

This smoke alarm replaced an out of date unit. I'm glad this alarm was still available and matches the other 6 alarms I have in my house.

- Reviewed: 03/03/2021 by Aniello Moscato

Outstanding

Great service. Immediate delivery.

- Reviewed: 03/02/2021 by Randolph Pischke

Quick install

Very, very easy to install replacing the same detector after 20 years of use. Took about 3-4 minutes total.

- Reviewed: 03/01/2021 by Harry Quick

Smoke alarm review

I haven't gotten them installed yet but I have been using the units that I currently have for 11 and a half years and they have been good,

- Reviewed: 02/26/2021 by Laura Conte

Good experience

Had a few questions about installing these that were answered on the store page. Good, clear information and excellent customer service. Will be back again

- Reviewed: 02/25/2021 by William Weidman

Smoke alarm replacement

First alert has made the process of replacing smoke alarms very easy..

- Reviewed: 02/22/2021 by NANETTE RODRIGUEZ

9120B

Excellent replacement at a fair price.

- Reviewed: 02/21/2021 by Deborah Bodnar

reliable smoke detector

I have new construction and used these throughout my home....feel safe

- Reviewed: 02/19/2021 by michael cook

Perfect replacement

Replaced my 10 year old smoke detectors with these and they were perfect and only took a few minutes to replace both. Highly recommend this model if you have hardwired smoke detectors.

- Reviewed: 02/18/2021 by Jose Diaz Munoz

Smoke alarm replacement

I bought this smoke alarm to replace one at home that became faulty. After searching in several places with no success including the store where I originally bought it from, I finally got this one in First Alert, that is identical to the one I had to replace. Installation was very easy and the fast response surprised me. I am very satisfied

- Reviewed: 02/17/2021 by Victor Galande

Glad the 9120 model is still in use

House came with 9120B AC powered smoke detectors. Ordered replacements since its been over 10years and decided to upgrade 2 locations to a CO combo unit. So glad that I was able to use existing cabling for the SC9120LBL, as well as the smoke only model. Install for all 7 locations was under 30minutes.

- Reviewed: 02/16/2021 by Victor Galande

Glad the 9120 model is still in use

- Reviewed: 02/16/2021 by William Grabe

Product- 9120B

Excellent service-exactly what I needed& wanted. Quick delivery.

- Reviewed: 02/16/2021 by G. Kinthaert

Easiest replacement ever

I needed to replace outdated and no longer supported hardwired smoke alarms and was initially worried about compatibility. While the mounting plate was a bit different it lined up nicely with previous screw mounts and these were a breeze to install, test and be operational. It took longer to get the ladder set up...

- Reviewed: 02/15/2021 by LEONARD COHEN

9120B smoke alarm

Easily replaced my old unit without the need to rewire. Seems solid - previous similar units were very reliable

- Reviewed: 02/15/2021 by David Throop

Home Detector

Product is great for our home protection.

- Reviewed: 02/15/2021 by Florentino Hernandez

Excellent replacement

Excellent replacement for my existing smoke alarm system

- Reviewed: 02/01/2021 by Stan Levine

Very good service

- Reviewed: 02/01/2021 by Patrick Walsh

Time to replace

Needed to replace all of my home alarms as the previous ones had passed their expiration date. This was an easy fix these fixtures. And at a fraction of the price being offered by HD or Lowes.

- Reviewed: 01/29/2021 by Josh Shendelman

Great Detector At A Great Price

I replaced an older First Alert with this one. It uses the same connection, so set up was a breeze. Highly recommended.

- Reviewed: 01/29/2021 by James Panaia

Simple to Update Your Home Alarms

I bought 6 First Alert Smoke Alarms after 12 years of my old ones. They were simple to just plug in and twist on. Now I am good for 10 more years.

- Reviewed: 01/29/2021 by KELLY BENNETT

Perfect!

The old unit was damage by a plumbing leak above it and this one is an exact match! Works great no false alert issues.

- Reviewed: 01/28/2021 by Paul Katzenstein

Nice design

Have had these hard wired units for about 20 years. Great design and they work well when tested, but the low battery alarm can be very annoying beeping every 20 seconds at 3am.

- Reviewed: 01/28/2021 by lingling dong

good

best quality

- Reviewed: 01/28/2021 by Brian Butler

Smoke Alarm

Easy to install. Test works. Hope I never have to use them!

- Reviewed: 01/28/2021 by Harley Pickett

Survey

Received my order of 5 units promptly, and was able to install all of them in about 45 min! They fit perfect and documented the install date! Thanks!

- Reviewed: 01/21/2021 by Robert Dickman

Smoke alarm

These were replacements for our originals when our house was built. They fit the original mounts, just plugged them in and that was it. Great alarm and superior service!!

- Reviewed: 01/18/2021 by Richard Kesling

EXCELLENT STORE HELP

I had an 18-year old smoke detector and called the store with the model number. The gentleman handling the call explained the model had changed and explained in detail that I would. only need to unplug and change the ceiling mount included. He took the time to warn me regarding not to touch the wires and that he would process immediately.. Great people, great products and reasonable prices.

- Reviewed: 01/18/2021 by Daniel Cornell

Items arrived on time in great shape. Very easy to install. Also good looking after installation.

- Reviewed: 01/13/2021 by Jenny Snowden

Great

Easy to install! Works very well, thank you!

- Reviewed: 01/11/2021 by Heidi Allen

what we needed

Bought this to replace a bad one, fast shipping and product works wonderfuly!

- Reviewed: 01/11/2021 by George DeMott

The First Alert Smoke Alarm

I am pleased with the new model smoke alarm. The old alarm plug in fit the new smoke alarm and made installation easier. Very quiet. no more false alarms -

- Reviewed: 01/11/2021 by Frederick Walz

works great

- Reviewed: 01/05/2021 by ZE QING WANG

Good price fire alarm

Easy to install, no complaint. Come with 9v battery. After installed, work like charm

- Reviewed: 01/04/2021 by Mike Stewart

Great savings!

I had a great experience with First Alert Store. Their price was 20 % of the price at Lowes and their service was fast and seamless. I will definitely do it again.

- Reviewed: 12/20/2020 by Theresa Tate

Easy replacement smoke detector

I received my replacement smoke detector in a short time. Easy to replace and I got free shipping on the product. Cost effective and easy fast delivery.

- Reviewed: 12/20/2020 by Trisha Semarge

Needed to order new smoke alarms

Was very easy to get on the First Alarm Site and find my type if alarm I needed. I did check and see if I was able to purchase the alarms at Target and Lowes but they didn't have the quanity I needed. This was the best place I could order them all for a great price. Thank you so much First Alert!!!

- Reviewed: 12/17/2020 by Willy M

First Alert Hardwired Smoke Alarm with Battery Backup - 9120B

Easy to order, to install, good price, and quality product.

- Reviewed: 12/15/2020 by Wanda Davis

Great product

- Reviewed: 12/14/2020 by John Lutz

Smoke Alarm Replacement

When alarms go bad, homeowners need protection and peace of mind that's what we got by ordering 2 alarms which were efficiently delivered to the home at a reasonable cost.

- Reviewed: 12/09/2020 by Robert Grzeszczak

Worked just as explained.

- Reviewed: 12/08/2020 by David Mirabell

Easy website to search and order. Received via FedX ground at 8:00pm which surprised me.

- Reviewed: 12/08/2020 by Kevin

they work

- Reviewed: 12/07/2020 by Michael Hanlan

Smoke alarm

Very pleased with the product, hooked them up and they work great Thanks

- Reviewed: 11/25/2020 by Robin Beatty

Great!

After a bit of a mix up re: my delivery address, we received the alarm. It snapped into place in 30 seconds. Booted up immediately. Wish everything was this simple!

- Reviewed: 11/25/2020 by Kathy Lui

It was very good price and quality.

- Reviewed: 11/10/2020 by Troy Prince

Satisfied customer

I was happy with the timeliness and convenience of your product . I recently ordered 2 smoke detectors for my mother's home that's 17 years old and was concerned about the proper replacements. Your website made it easy and convenient to order the proper unit. I will continue to use your products and recommend and refer others to do so as well. Thanks!

- Reviewed: 11/10/2020 by william MACHTIGER

Easy Install, BUT

Arrived in good time. Installed four of five replacements in a short one hour. BUT good thing that I ordered six because 2 of them did not respond properly and had to be returned. Store should make a problems number clear in packaging. Took two calls to find out that this is handled by their sales department.

Customer Service Response:

Thank you for the feedback, William. We will be looking into this matter closely.

- Reviewed: 11/04/2020 by Joseph Chick

simple replacement

Our hardwired smoke alarms were original to our property, and over due for replacement. A screwdriver and step stool were all that we needed to do the job. Did not even have to change the 3 wire adapter, as the old ones fit the new alarms.

- Reviewed: 11/03/2020 by Jack Allen

Easy to install and fast service.

I replaced my old smoke detectors with the new ones in about 15 min. The old ones were over14 years old and still working but I had noticed some degrading so I replaced them with a exact change out. the new ones came with batteries so it was just unplug the old and put in the new , simple and fast.

- Reviewed: 11/02/2020 by Cole Long

Perfect Fit

We built our home 6 years ago and one of the hard wired smoke detectors went bad. We searched Home Depot & Lowes but couldn't find a matching replacement. First Alert had just what we needed. This connected perfectly to our system.

- Reviewed: 11/01/2020 by Steven Grady

Easy replacement

One of my 14 year old smoke detectors failed. I was pleased to find the exact item available after all this time. The new complete device with mountings and all arrived, however I only needed the outer, functional unit. I plugged it in to the existing mounting and wiring and it works just fine. I will be ordering at least one of the First Alert/BRX combination smoke and carbon monoxide detectors to improve my protection, expecting the same compatible swap-out. I may refresh replace the rest of the units in the house as well just so everything is new and up to date. Its a good system.

- Reviewed: 11/01/2020 by Nanette Stacker

Great service

The smoke detector arrived and was easy to install.

- Reviewed: 10/30/2020 by Charles Gebien

Good price, easy to install, works

I'm a comparison shopper and the First Alert store is the cheapest vendor. Installation was easy but had to change out the old wiring plug and mounting bracket with the new supplied ones. Works fine, but supplied 9v battery is a cheap heavy duty not alkaline. it's ok though as the hardwire supplies the power, not the battery. I'll replace batteries later with alkaline which should last about 5 years.

- Reviewed: 10/28/2020 by Michael J Hastings

Great Service for a great product!

I received what was pictured on the web page! Received the order prompted and undamaged! Would order from this First Alert Store again! Thank You!

- Reviewed: 10/27/2020 by DL

Great price for a smoke alarm set

I replaced 10 old smoke detectors. I purchased the wiring adapter so I did not have to rewire. All 10 are working well, tested and in sync. I could not be more pleased with this experienced. The smoke detectors arrived in 1 business day.

- Reviewed: 10/26/2020 by Lonny Porter

First Alert Hardwired Smoke Alarm

Very easy to install. Been using this reliable product for years.

- Reviewed: 10/22/2020 by Cole Long

Perfect Fit

- Reviewed: 10/21/2020 by Mary Rae

These are installed and tested ,

- Reviewed: 10/21/2020 by Richard Berger

Super easy

They have kept this item similar to the smoke detector they made at years ago. Because of the similar features it made it an easy swap.

- Reviewed: 10/21/2020 by Robert Payne

first alert

Product works great. Easy to install. Don't know why old one stopped working.

- Reviewed: 10/20/2020 by Cole Long

Perfect Fit

We built our home 6 years ago and one of the hard wired smoke detectors went bad. We searched Home Depot & Lowes but couldnt find a matching replacement. First Alert had just what we needed. This connected perfectly to our system.

- Reviewed: 10/19/2020 by Daryl Axsom

9120B Smoke Alarm

Excellent replacement for an older model. Just a quick swap out. Looks good too, Arrived earlier than expected.

- Reviewed: 10/19/2020 by Harry E McNair Jr

Excellent

- Reviewed: 10/16/2020 by Shane H.

Smoke Alarm

The product performed as advertised. What was equally important to me, was how I was treated by customer service. They answered my questions professionally, about replacing an older smoke alarm model.

- Reviewed: 10/16/2020 by Dan Ulrich

replacement backup

simple replacement after being on back order.

- Reviewed: 10/15/2020 by Carmelo Vargas

Great Products

Excellent Products,Trustworthy Company, Fast Shipment. Quality and Reliable Products

- Reviewed: 10/15/2020 by Robert Walker

First Alert Hardwired Smoke Alarm

Good product, plan to use as a backup.

- Reviewed: 10/14/2020 by Dan Guss

Easy installation for replacement

I recently installed 6 of these units in our home to replace 10-year old first alert detectors. The old detectors worked flawlessly for 10 years, but had reached the end of their expected life. Those old detectors in turn replaced the 6 original units in our house built in 1999. I was pleased to find that the wire harnesses and detector mountings are still the same for this model. All I had to do was unplug the old units, and remove them, simply plug in the new units to the harnesses and twist them in place and check their operation. It took about 45 minutes to do the entire job slowly and deliberately, and the new units are operating perfectly.

- Reviewed: 10/14/2020 by Michael Booker

As Advertised

Delivered before time. Great customer service.

- Reviewed: 10/14/2020 by Robert Newman

Simple to install

The instructions were straightforward and installation was simple. The included battery is a plus.

- Reviewed: 10/14/2020 by Jim Spicer

Smoke alarms

These units did replace a previous model 4120B and the interconnection worked very well. Replacing the bases was a bit of a chore, due to the screws currently in place were of the older slotted head and slipped the screwdriver several times. It did get done and I am well pleased thus far.

- Reviewed: 10/04/2020 by NANETTE RODRIGUEZ

Very Good

- Reviewed: 08/22/2020 by Mike Bibby

Group replaced smoke alarms

I had a smoke alarm fail and saw the unit was built 16 years ago. Since ten years is typical life, I ordered three and replaced all at the same time. Price and delivery was excellent from the First Alert Store.

- Reviewed: 08/20/2020 by Chrissy Horner

Cheaper Than Big Box Store

Same as home depot and lowes but cheaper and free shipping. Great deal!

- Reviewed: 08/20/2020 by ROY SIDERS

FIRST SMOKE ALARM REPLACED

PURCHASED THE 9120B IN AUGUST 2020. I WAS LOOKING TO REPLACE A 20 YEAR OLD BRK SMOKE ALARM AND DIDN'T WANT TO COMPLICATE THE PROCESS BECAUSE I HAD NEVER REPLACED ONE BEFORE. CALLED BRK/FIRST ALERT AND THE REPRESENTATIVE ADVISED THAT THE 9120B WAS THE REPLACEMENT UNIT FOR MY OUTDATED MODEL. ORDERED IT AND COULDN'T BE HAPPIER! INSTALLATION WAS QUICK AND EASY AND THE UNIT WORKS PERFECTLY! INTEND TO CALL THEM AGAIN WHEN I REPLACE THE OTHER SMOKE ALARMS IN THE HOUSE!

- Reviewed: 08/19/2020 by Jorge Campa

Great smoke alarm

Great purchase excellent product and customer service.

- Reviewed: 08/19/2020 by William Welk

great price and service

The price was lower than I could find elsewhere and shipping was fast. Installation was simple. The website was easy to search.

- Reviewed: 08/10/2020 by CA R

Perfect

Easy to install, works perfect!

- Reviewed: 08/10/2020 by Masaru Shimoda

The old alarms lasted 20 years. The recently purchased are very much alike. Good for another 20 years

- Reviewed: 08/05/2020 by Michael Craig

Homeowner

Great product easy to install need to order 3 more

- Reviewed: 08/04/2020 by Jerry Leonard

Excellent price.

- Reviewed: 08/03/2020 by Chester & Pelt

Fits perfect

Had no problem replacing my old smoke alarms with these units. Just be sure the power is off at the unit before changing the plug in wiring!!! thanks

- Reviewed: 08/03/2020 by Edward Clarke

Excellent

Shopped for this on the internet great prices compared to others on the internet. Fast shipping too.

- Reviewed: 08/03/2020 by D. Arriaga

Great units!

It was time to replace my old alarms they were over 10years old. They were the same brand and they served me well they were still working before they were replaced. Your familys safety is priory #1, so I decided to replace all 11 of our decade old smoke alarms. These were direct replacements for obsolete model we had before, according to the website. Would highly recommend!

- Reviewed: 07/30/2020 by DAVID FOREMAN

It works

- Reviewed: 07/30/2020 by Terry White

Just as advertised

Happy with my purchase.

- Reviewed: 07/28/2020 by ZE QING WANG

Easy installation, and it works fine so far. Except the package does not come with the screws. But overall works expected.

- Reviewed: 07/27/2020 by Joe Marro

Good Product

It was great that you still carry a direct replacement for a item that was 13 yrs old. That tells me that it is a good product Thanks

- Reviewed: 07/25/2020 by K Riggs

perfect replacement

I always keep several of these on hand, in case replacing the battery doesnt stop the chirping!

- Reviewed: 07/18/2020 by Gaylan Gallacher

Thank you for giving us the opportunity to purchase these Smoke Alarms through your on-line store. It is most convenient and easy. Your product is sensational and in addition easy to install when needed. Thank you again.

- Reviewed: 07/17/2020 by Brian Petroski

Home Smoke Alarms

Product was sufficient. Boxes were smashed. Luckily the smashed boxes didn't affect the quality of the product. Bad shipping damages to boxes.

- Reviewed: 07/17/2020 by William McClellan

Excellent Service

Packaging was excellent so the products were received in great shape and on time.

- Reviewed: 07/16/2020 by debi troiano

Easy Replacement

I needed to replace 3 smoke alarms as they had reached their end of life. These smoke alarms easily replaced the pre-existing ones..no problems.

- Reviewed: 07/15/2020 by Beverly London

Product was easy to install and the correct match to previous smoke alarms. Product was delivered very quickly.

- Reviewed: 07/15/2020 by Stephen Dyleski

Easy replacement.

My detectors were 10 years old. I ordered from the First alert store. I waited a few weeks because they were on back order. They arrived and I replaced all 3 in 15 minutes with no problem. I saved a lot compared to local retail prices.

- Reviewed: 07/14/2020 by Robert Dobesh

Smoke Detectors

Very good price for six detectors. Replaced every one in the house for less than $10 apiece. Had all replaced in about 20 min. Very good deal.

- Reviewed: 07/14/2020 by marshall moore

Mhm order

Items worked well easy install.

- Reviewed: 07/14/2020 by Marvin Boyd

Excellent quality

The product was excellent quality for the price. I looked in stores for the product and could not find it. Then it found First Alert on the web and glad I did.

- Reviewed: 07/01/2020 by Chuck Laslie

EASY TO INSTALL- VERY HAPPY

- Reviewed: 06/19/2020 by Dianne Ormond

Easy Replacement

My previous First Alert Smoke Alarm with Battery Backup had finished its lifespan, and it was time to be replaced. I was pleased with how easy this new arrival replaced the old. Just disconnect the wire plug and plug into the new one, and rotate into the collar until it locks. Everything fit, and it was fast and easy.

- Reviewed: 06/19/2020 by Kelly Becker

Installtion

Easy to relace old ones with new one, only had to screw in bracket and plug new one in. Very easy.

- Reviewed: 06/19/2020 by Terrell Moore

First Alert Satisfied

Very satisfied with your product.easy install Thx.

- Reviewed: 06/10/2020 by david tamura

Fresh Stock

I ordered three 9120B ionization smoke alarms from firstalertstore.com. They were shipped very quickly by USPS Priority Mail. The items were fresh stock, manufactured only two months earlier. I ordered an additional three First Alert Photoelectric smoke alarms 7010B from Amazon because their price was lower than the firstalertstore.com. These were very slow in arriving and were made over two years ago. First Alert has told me that even though these are over two years old, if they have never been activated, their useful service life will not be affected. I hope so. Otherwise, next time I will order all my replacements directly from First Alert.

- Reviewed: 06/09/2020 by Kelly Becker

So far so good.

Looks good, easy installation, so far so good.

- Reviewed: 06/09/2020 by Amy Jackson

Works Great!

These were bought to replace the same model but just 10 years older. We did have to replace the bracket to get these to fit but it wasn't hard. 6 of these went up in about 30 minutes. the existing wiring just plugged right in. No more late night chirping and false alarms!

- Reviewed: 06/09/2020 by JACK HERRING

GREAT REPLACMENT

I was pleased to find the exact replacement smoke alarm model that had been in my house for 14 years. The smoke alarm even attached to the old mounting bracket which made for a very easy install. The item was received fast. I would use this company again. Very pleased with their customer service.

- Reviewed: 06/09/2020 by sandra williams

Received early everything is great

- Reviewed: 06/05/2020 by Donald Souza

New Smoke Detectors

Great service. Quick delivery.

- Reviewed: 06/05/2020 by Paula Kuhl

Excellent Buy

The website was very user friendly and found my alarms right away. Reasonably priced and prompt delivery!

- Reviewed: 06/04/2020 by John Masters

Great product

Didn't realize until lately that smoke alarms should be replaced every 10 years of so. Our hard wired alarms were 26 years old so I contacted the First Alert Store to purchase replacements and wiring adapters. Only issue I had was that I was told I needed one style of adapter when, by looking at the website, I knew I needed a different configuration. I ordered the ones I needed and installation was a breeze. My family and I feel like were protected again.

- Reviewed: 06/04/2020 by Earl Fox

easy to install. works fine. but, delivery time was slow.

- Reviewed: 06/03/2020 by Timothy MacKay

9120B

The product arrived on time, installed as expected and without problems.

- Reviewed: 06/02/2020 by Claudia Rodarte

Great product

This fire alarm was recommended to me from a friend.

- Reviewed: 06/02/2020 by Janet Bevirt

Great 10 Year Smoke Alarms

So glad you make these great wire-in with battery back-up 10 Year Smoke Alarms. Was only finding 5 Year Smoke Alarms in the stores.

- Reviewed: 06/01/2020 by Juan Reyna Jr.

Replaced all smoke detectors

I have a hard wired system and had older models from 2005. Replaced them with 9120B and they fit and work great.

- Reviewed: 06/01/2020 by Richard Jess

PErfect Fit

I was able to replace my 10 year old smoke detectors with this replacement product in just a few seconds. Perfect replacement and my home continues to be protected.

- Reviewed: 05/29/2020 by Duane Williams

First Alert Hardwired Smoke Alarm with Battery Backup - 9120B

It was time to replace all of my dated systems. I found First Alert Hardwired Smoke Alarm with Battery Backup - 9120B which is a highly compatible / superior system than the one I had. Great product.

- Reviewed: 05/29/2020 by Richard LeTourneau

Great Alarm

So far this alarm seems to be great. Hopefully it will never go off, but will if the need arises. It was a replacement for a similar alarm and it fit the ceiling hole perfectly.

- Reviewed: 05/22/2020 by Bryan Gibson

Smoke Alarm

Have not had any issues with these. I would recommend these smoke detectors

- Reviewed: 05/21/2020 by ANGELIA BASS

they are the I wanted. I will be ordering 3 more .

- Reviewed: 05/21/2020 by Virginia Rapplean

Replaced old ones

I called first alert and didn't think I would be able to replace the existing fire alarms that were hard wired in. But they were able to give me the correct information and I ordered them online for a great price! They look great, easy to install and work good. Very happy I didn't have to figure bout rewiring!!

- Reviewed: 05/12/2020 by Ellen ebat

great purchase

It even came with batteries!

- Reviewed: 05/11/2020 by Judy Parker

Smoke alarm

This was a replacement for a 3 unit alarm system. Perfect fit. Easy to install.

- Reviewed: 05/10/2020 by Robert Sanders

Good

- Reviewed: 05/09/2020 by LeAnn Kirkpatrick

The order was sent as ordered. The installation was easy. And very unexpectedly and positive, the units came with batteries! Thank you!

- Reviewed: 05/07/2020 by Virginia Del Toro

First Alert Smoke Alarm

Satisfied. Very easy to install.

- Reviewed: 05/07/2020 by Robert James

Replacements

Glad to find you still had this model as I have seven of them installed. Ordered a couple extra for future replacements, was easy to find on your site and easy to order. Thanks

- Reviewed: 05/07/2020 by Bala Mallampati

Awesome quality & promptness

Quality of product of very good and received on time. Thanks for your service

- Reviewed: 05/06/2020 by Seymour Rothstein

Easy Order

Product easy to order. Prompt delivery. Installed by me in just a few minutes.

- Reviewed: 05/05/2020 by Paolo Matrascia

Excellent price and quality

Fast shipping, very competitive price.

- Reviewed: 04/29/2020 by Sally Loy

Alarm

Order was received quickly, and is a very good product.

- Reviewed: 04/28/2020 by KB

Great

Ordered 3 to replace old smoke detectors and they were very easy to install. No need to mess with the wiring which was great. Shipping was also very fast - ordered on Sunday night and arrived on Tuesday. Thanks for the great service!

- Reviewed: 04/28/2020 by WILLIAM REY

9120 b smoke alarm

Fast free delivery, replacement product for out of date smoke alarms. Easy ordering, first quality.

- Reviewed: 04/28/2020 by Joseph Van Kempen

Smoke Alarm

Purchased as replacements. Very easy to install! Service provided during the ordering process was very impressive! Very fast and order was accurate.

- Reviewed: 04/27/2020 by mary fong

Just what I was looking for

I was looking to replace all our first alert alarms with the least amount of damage to the drywall and re-wiring. With a little help from a customer rep at First Alert, she lead me to the right product. Replaces exactly all my old alarms.

- Reviewed: 04/27/2020 by DIYDad

full house replacement

replaced all the detectors in house as i had various ages installed. 8 units done in 30 minutes no problems! units come with batteries with a pull tab so very easy to activate.includes wiring and a paint cover as well.

- Reviewed: 04/27/2020 by Ronald Escalante

Fire smoke alarm

Fit perfectly

- Reviewed: 04/27/2020 by Phillip Adams

Phillip Adams

Works perfect, thanks!

- Reviewed: 04/27/2020 by Joseph Van Kempen

Smoke Alarm

Purchased as replacements. Very easy to install! Service provided during the ordering process was very impressive! Very fast and order was accurate.

- Reviewed: 04/27/2020 by Abdel Bouaichi

Great product. was easy to set up

- Reviewed: 04/23/2020 by Lawrence Hopkins

Excellent service

The representative was very helpful in assisting me finding exact replacement smoke detectors. He also provided info on installing replacements.

- Reviewed: 04/20/2020 by SteveAnna Williams

Item is as described

Great quality and value

- Reviewed: 04/20/2020 by THOMAS Jones

Excellent service

Got my order in a timely manner and will order from them again

- Reviewed: 04/19/2020 by George Lazur

Great value and service!

Good prices and fast service!

- Reviewed: 04/17/2020 by Mike Angarola

Great service

Items arrived quickly and was exactly what I ordered. No issues.

- Reviewed: 04/16/2020 by William DeVore

Great alarms with a very good price!

- Reviewed: 04/12/2020 by Sally Loy

Smoke Alarm

Arrived quickly, and works great.

- Reviewed: 04/10/2020 by D G

Ordered 4 9120B Smoke Alarms to replace my 10 year old alarms. They fit the old mount and the old wiring was the same for the new. Quick swap, all checked out and worked properly. Shipment was quick and well packaged.

- Reviewed: 04/10/2020 by David Rosner

Best Smoke Alarm

Quick delivery and super easy install. Works great

- Reviewed: 04/10/2020 by Carl Ganocy

Easy to install

Replaced 6 alarms. The old ones were 10 years old and were begining to malfunction. The old ones were also 9120B, so everything was easy.

- Reviewed: 04/09/2020 by Earl Fox

Prompt service. Good product. Easy to install. Works great.

- Reviewed: 04/08/2020 by Frederick Roche

Good service!

Product shipped very fast, arrived in 2-3 days. I am fully satisfied.

- Reviewed: 04/08/2020 by Loyda Lebron

Reliable smoke alarm

Our order came really fast and it was perfect. The smoke alarms we ordered from the Company got to our house and they are very good quality.

- Reviewed: 04/08/2020 by Jim Schuweiler

Perfect

Finished off the basement and they work perfectly with the rest of the system in my new house.

- Reviewed: 04/07/2020 by Joseph Coulter

Could not of been easier

- Reviewed: 04/06/2020 by George Lazur

Fast service at a reasonable price!

The products are of high quality and are priced very reasonable , plus free shipping.

- Reviewed: 04/05/2020 by Christy Krainess

I replaced an older model and I love the new ones they were easy to install and work great

- Reviewed: 03/25/2020 by GB fan

Wasn't able to find one in any stores to replace an old one I had. Thankful to be able to order online with fast shipping...had it in 3 days. Plugged into already wired and attached to existing connection. Easy

- Reviewed: 03/24/2020 by S Thomas Church Jr

Amazons Price Gouging

I needed to replace an old First Alert hardwired Smoke Alarm that was still working after 30 years in my finished basement. It was discolored so I called First Alert and was given the exact replacement. Once I had the model number I tried to find it on Amazon but they showed multiple versions so I called First Alert again and the tech asked me how much did it cost and he was amazed that it cost 4 times what First Alert Store offered on line. I immediately ordered the replacement with free shipping and saved over $30 versus Amazons price. I recommend that anyone that is planning on purchasing First Alert Smoke alarms that they call the First Alert on-line store always. Plus I had on-line excellent technical help on how to uninstall and install the smoke alarm. This is not the first time that I realized that Amazon practices price gouging, in fact, I am awaiting an investigation from Amazon as to why a physicians practice offers an identical item for 10% higher price. Buyer Beware!!

- Reviewed: 03/23/2020 by chuck lovsey

5 Alarms

We had these alarms in our home and they where malfunctioning so I just replaced them all, works fine now.

- Reviewed: 03/22/2020 by George Lazur

Real value!

The 9120B smoke detector replacing my 17 year old unit is a very good product and great value!

- Reviewed: 03/20/2020 by Terrance Tobias

Excellent Replacement

We ordered 3 9120B Hardwired Smoke Alarm with Battery Backup detectors to replace our 12 year old models. The new detectors fit the old mounts and electrical connections perfectly. The First Alert staff were helpful in answering my questions prior to placing the order through the First Alert Store online. Great customer service to a loyal customer.

- Reviewed: 03/18/2020 by Darrell Abel

Smoke Alarm

Replaced old 4120B alarms. Simple plug in and done.

- Reviewed: 03/17/2020 by Luther Weatherby

First Alert Hardwired Smoke Alarm with Battery Backup - 9120B

Order was received earlier than I expected it and units excellent quality.

- Reviewed: 03/12/2020 by Daniel L Whan

Exact replacement

Installed no problem

- Reviewed: 03/09/2020 by Gary C Woodward

Easy to Install Replacement

SInce I was replacing identical units I did not need to mount a new mounting plate or do any new wiring. I just twisted the old one off the mounting plate and disconnected a connector and then reconnected the new unit and twisted it into the existing mounting plate. It could be as quick as 5 minutes a unit including some time to confirm power leds are on and test it. It even comes with batteries.

- Reviewed: 03/06/2020 by Jonny Terra

Smoke alarm

Exelent and fast service

- Reviewed: 03/04/2020 by Dave Adams

In my opinion

The people working here were kind and helpful. My 10 ,16 yr old detectors needed replaced and I got them fast and at a good price. Easy to change out and working well. Thank you all..

- Reviewed: 03/02/2020 by David Campbell

Replacement

I purchased these as replacements that were installed in my new construction home. I believe the original detectors were not protected from dust causing them to malfunction. These alarms are sensitive loud and interconnected so you can't miss an alarm. Ordering directly from first alert is the best way to go. Saved 30% compared to retail and delivered for free to my door. Very pleased.

- Reviewed: 03/02/2020 by Betty Eilers

Good product unless they break then seems like a new one is necessary Planned obsolescence

- Reviewed: 03/02/2020 by Connie Isaacson

Very good and easy to install

- Reviewed: 02/25/2020 by GERALD STHILAIRE

good service and price

have a unit that is 15yr old found exact replacement for great price and delivery all good

- Reviewed: 02/24/2020 by Frank Venditti

ITEM 9120B

Perfit fit for replacement of old alarm

- Reviewed: 02/21/2020 by Matthew Huntwork

Batteries Included

Smoke Alarms worked as described with no issues. Batteries were included. The construction dust cover is good to have to protect the unit from fouling during construction or heavy cleaning events.

- Reviewed: 02/20/2020 by Paul Corcorran

Great product!

They were so easy to put up and look great in the house!

- Reviewed: 02/19/2020 by John Fitzgerald Jr

Great deal on a great product. Free shipping is a bonus.

- Reviewed: 02/17/2020 by James Morgan

Just what I was looking for

Home came with same detectors installed. They have always performed good. Did not want to reconfigure where these mount, and did not have to because these units where a direct fit to old bracket and existing wiring. Was just looking to update mine since they where manufactured in 2005. Basic smoke detectors that perform good. Would recommend these.

- Reviewed: 02/12/2020 by Clamperl Bhatia

Decent product, low price

Does what it says, but I have had several of these fail shortly after the 5-year warranty period. I keep having to purchase new ones to replace the existing ones that would incessantly chirp for unknown reasons not low battery. Hopefully the replacements will last more than 5 years.

- Reviewed: 02/12/2020 by Saroya Hardaway

Excellent Product!

- Reviewed: 02/11/2020 by Thomas Eleyet

Perfect replacement

Purchased five of these to replace existing smoke alarms in my home that were well past their recommended 10 year life span. Three were the exact same model as those I purchased, so it was just a matter of plugging them in. The other two were very easy to change over, just three wires to install the new plug. Then simply test all alarms for proper function.

- Reviewed: 02/11/2020 by Hafizur Rahman

Excellent Service

I am happy with the service. I made a mistake in address and the customer care professional called and made sure the address is correct. I am very impressed. It arrived on time even it was free shipping.

- Reviewed: 02/07/2020 by James DiBlanda

Excellent product, received in a timely manner.

- Reviewed: 02/06/2020 by Brian Marquis

Perfect

Could not find a replacement in store and found I could order on line

- Reviewed: 02/03/2020 by Keryl Carter

Very Pleased!

I was very pleased with the product. Taking the old smoke alarm down was easy, but installing the new one was even easier. Thanks for making a great, safe product. I feel at ease now that I have new alarms in place.

- Reviewed: 02/01/2020 by Leland Landry

Simple Setup

Easy to install and setup!

- Reviewed: 01/28/2020 by Alfred Reci

fast and helpful

- Reviewed: 01/27/2020 by Frederick Roche

Good service!

My First Alert alarms were acting strangely. Your phone technical support quickly diagnosed the issue routine need for replacement after 7 years. I ordered a replacement unit online and was very pleased that it was delivered in just a few days. Well done!

- Reviewed: 01/27/2020 by Aubrey Chitsey

Great replacement Smoke Alarm

I replaced my smoke alarm and I so easy because all the hook ups worked for my situation.

- Reviewed: 01/24/2020 by Dale Johnson

Seamless install of replacement

After hearing high cost estimates from an electrician to replace a faulty alarm, I was pleasantly surprised by the low cost and easy installation of my replacement ordered from you company.

- Reviewed: 01/21/2020 by Gina Brodbeck

Great product

Great price for these smoke detectors. Speedy shipping

- Reviewed: 01/20/2020 by Daniel Yohannan

Home owner

Best products and easy to install

- Reviewed: 01/20/2020 by Robert McDermott

Fast service and best price

- Reviewed: 01/16/2020 by Kenneth Coco

Great product

Great product hooks into security sys and is hard wired. NO worries and very loud alarm.

- Reviewed: 01/13/2020 by Gene Bedley

Smoke Alarm

Appreciated the assistance to help me before the new smoke alarm arrived

- Reviewed: 01/06/2020 by Tiria Brown

Everything works fine , thanks !

- Reviewed: 01/05/2020 by sarojini gude

Good Purchase

I was looking for this products at a store, couldn't find it. this website is convinient, easy to order. Shipment is ontime and product is good.

- Reviewed: 01/03/2020 by Michael Weishaar

Most BORING installation of all time

I was replacing a faulty smoke detector in my house, and was disappointed with how boring this was to replace. Loosen two screws on old mounting plate, remove mount. Add new mounting plate, tighten screws. Remove plastic strip to engage battery, plug in detector wtih existing wire, twist detector into mount. Press test button, verify it works. Done. Yawn. Easiest upgrade/replacement of anything in any house I have ever owned. No multiple trips to the hardware store, modification of anything required, 1 tool not a big hammer, no swearing, blood, or fire. Would buy again.

- Reviewed: 01/01/2020 by Carol Kocher

Fast delivery

When our old smoke alarm quit working even with a new battery backup we wanted to get a replacement quickly. The best price was at First Alert Store and since they had a bundle for 3 we decided to replace all our smoke detectors since they were all the same age. The smoke detectors came quickly and were very easy to install. Would recommend This vendor to friends and family.

- Reviewed: 12/26/2019 by Nancy Palla

9120B

Very efficient service and the delivery was on time .Overall everything was A++ service.

- Reviewed: 12/20/2019 by Mike Buckley

Fire Alarms

Fire Alarm arrived as advertised! No issues with delivery and the parts need for replacement installation!

- Reviewed: 12/18/2019 by Denise Cherry

FIRST ALERT SMOKE ALARM

Very good company to buy from. Accurate product was sent and in a very timely manner! Would buy from this company again, no problem!

- Reviewed: 12/17/2019 by Susan Myrick

Exactly what I needed!

- Reviewed: 12/17/2019 by Monica Taylor

The products are easy to install. Battery is included. Quick service

- Reviewed: 12/17/2019 by Kassandra Hernandez

Hardwired Smoke Alarm

Haven't put them up just yet, but they arrived when I expected them to and customer service was very helpful. Would purchase from this site again.

- Reviewed: 12/12/2019 by KB

So far so good

I replaced 9 smoke alarms in my home a couple of months ago... since I had switched brands there was some basic wiring work to do as well as swapping the bases, but it was smooth and easy. The units all tested good, including the inter-connectivity, and I have not had any false alarms so far. All alarms came fresh from the factory... mfg dates were less than a month earlier. Overall, this was a great deal on some quality alarms from a brand I trust.

- Reviewed: 12/10/2019 by raymond brandenburg

Work perfect

- Reviewed: 12/03/2019 by Carolyn Miller

smoke alarm 9120B

very pleased with the service

- Reviewed: 12/03/2019 by Barb Thompson

Smoke alarm

Fast shipping. Easy to install. First Alert brand is reliable and reasonably priced.

- Reviewed: 12/03/2019 by Monica Taylor

Great product and Price

I called for help with purchasing a replacement smoke detector. The rep. Was very helpful. She walked me through which product to purchase. The service was quick. The product arrived quickly and with the straight forward instructions, I was able to replace them easily with no prior experience of switching out hardwired fire alarms.

- Reviewed: 12/02/2019 by Chris D.

FIRST ALERT 9120B

This item was a replacement for one that went bad in my home. Price was good and item arrived right on time and as promised.Good and reliable product.

- Reviewed: 11/25/2019 by Buster Carlile

Great!

Great product. Great service. Great price. Everything just as it was stated that it would be. Thanks First Alert Store.

- Reviewed: 11/25/2019 by SHAMI ALGAWZI

Reliable device for safety

Thank you for the order, I wish if we have option to not include the battery 9 v, as we face deficiencies in Shiping item by air.

- Reviewed: 11/25/2019 by Jordan Wild

Easy install, works great

- Reviewed: 11/20/2019 by mary pesola

Easy to use

Worked just fine

- Reviewed: 11/20/2019 by Julie Harvatine

Excellent Customer Service

Everything about my experience was first rate from the customer service I received when I had to call about a replacement model to the extreme quickness of the order placement and shipping.

- Reviewed: 11/18/2019 by Steve Dutter

Smoke alarms

Replaced my 13 year old smoke alarms with First Alert units. I now feel comfortable and confident that I have smoke alarms that will aid us should we ever need them...Thanks

- Reviewed: 11/18/2019 by Larry Owens

Upgrading old First Alert Smoke Alarms

Replaced for upgrade, seven, 22 year old, Hardwired First Alert Smoke Detectors. Easy installation. I like the green active and red light alarm ID system.

- Reviewed: 11/14/2019 by Gl Burch

Very Good!

- Reviewed: 11/12/2019 by Calvin Callier

very good

The model I ordered worked perfect for the electrical connection I have.

- Reviewed: 11/05/2019 by stephen demetri

EXCELLENT PRODUCT AND I AM VERY PLEASETO GET THEM

- Reviewed: 10/31/2019 by Gary Loper

Easy Installation.

The smoke alarm arrived very quick, and was easy to install. It contained the battery which surprised me, and the alarm manufacturing date was current.

- Reviewed: 10/30/2019 by Susan Morales

Safe Again

Very happy with the purchase. This is the brand that was used originally, lasted 14 years

- Reviewed: 10/30/2019 by Carol Pease

Exact replacement

I looked around for a smoke alarm replacement with no luck. Finally decided to check out the First Alert Store and, happily, found the exact replacement! Excellent price to boot!

- Reviewed: 10/29/2019 by stephen demetri

home owner

These items were hard for me to find.. excellent price and free delivery

- Reviewed: 10/28/2019 by Jerimie Greene

Smoke Alarm

Arrived on time in great condition no issues

- Reviewed: 10/28/2019 by Mark Stang

Good smoke detector

I recently purchased 6 model 9120B to replace my existing BRK 86RAC smoke detectors. They were an exact replacement and I could use the existing electrical terminals that were already wired into my house.

- Reviewed: 10/25/2019 by Dominic Njogu

Good experience and timely delivery.

- Reviewed: 10/25/2019 by William Pawling

Easy switch out

Ordering on-line was easy, and the order arrived in just a few days. The smoke alarms were purchased to replace the four installed when the house was built. I purchased the same model, so it was a quick change out. This is the second time we have replaced them every 10 years and hope the design is not changed.

- Reviewed: 10/24/2019 by Khan Ikram

Good

Easy to install. I have been using this in my home more then 10 years. It is time to replace. So I did and works like charm. Thank you for making good reliable products.

- Reviewed: 10/23/2019 by John Heyninck

alarm 9120b

We received the alarm fast and installation was easy would recommend this alarm to anyone who want protection from fire

- Reviewed: 10/17/2019 by brad miller

Great dveice@ a Great Price

Product cannot be any better for your money. Bought 96 for a hotel I run!!

- Reviewed: 10/16/2019 by Reginald Walker

Owner

The products and service was excellent.

- Reviewed: 10/15/2019 by ronald coleman

replacement

They both seem in good condition and easy to replace

- Reviewed: 10/14/2019 by Ronald DeMien

Everything arrived on time in good shape. Everything worked.

- Reviewed: 10/10/2019 by brad miller

Great dveice@ a Great Price

Bought 96 of these to replace 10 yr old First alert smoke detectors. Bought them in 12 packs at a great price. They even come with batteries!!! Amazing savings there if you figure what 96 9v batteries would have cost you too !!! Would do this again. Definitely recommend the product!!

- Reviewed: 10/09/2019 by palanivelrajan muthuramalingam kathiresan

Fast and simple. It took less than 10 minutes.

- Reviewed: 10/04/2019 by Katherine Wise

I have not completed the install. I was told that my older alarm was replaced with a newer version and I would have to rewire and redrill holes. I was worried because I needed to replace my older smoke alarm but didn't want the added expense of potentially hiring an electrician to rewire and refit units. The newer version appears to be a perfect fit with all the holes and the and wire switch so I will not have to do additional work to replace my alarms. That was awesome.

- Reviewed: 09/26/2019 by John Verrill

what I expected

quick delivery and just what I needed.

- Reviewed: 09/23/2019 by Howard Birkel

Replace old ones from 2000

They ware working and did not have to change any of the wires plugin and work from the point on.!!!!! The ones that I had to replace had a date of SEPT 27/ 2000. Thank you First Alert for the help!!!!!!

- Reviewed: 09/23/2019 by Jim Cacchione

Smoke Detectors

I am so happy that I found the replacements for our old smoke detectors. They are easy to install and they look great. Thank you. Jim C.

- Reviewed: 09/19/2019 by John Fitzgerald

Great free shipping. Shipped within hours and arrived quicker than I expected.

- Reviewed: 09/18/2019 by Debbie-Ann Walker

No issues

Called customer services and they made it easy to replace the alarms I had for over 10 years. Ordering from First Alert gave the best price and value and it arrived in no time to my home.

- Reviewed: 09/17/2019 by Melida McLenan-Kenny

Excellent choice. Very easy to installed. I am very satisfied.

- Reviewed: 09/13/2019 by Glenn McArdle

McArdle Review

The new unit installed without a hitch and seems to function properly. The former unit was installed in 2005 and gave us no trouble until one day it started beeping incessantly, even with a battery replacement.

- Reviewed: 09/12/2019 by ryan psimas

First Alert Hardwired Smoke Alarm with Battery Backup - 9120B

Smoke detector works perfectly. Wire harness matches the previously installed detector making new install easy. Great product.

- Reviewed: 09/12/2019 by Larry Feldman

Time to Change the Smoke Detectors

Great to be able to exactly match the model that was installed. Easy to order, shipped promptly, and easy to swap out. Good for another 10 years!

- Reviewed: 09/11/2019 by Kevin Beyer

9120B Smoke Alarm

Very easy to install, just had to remove 2 screws for the old base and put the new base in.

- Reviewed: 09/09/2019 by William Brust

Smoke alarm

Product works and was easy to replace.

- Reviewed: 09/02/2019 by Thomas Martin

First Alert Hardwired Smoke Alarm with Battery Backup - 9120B

Product arrived on time, easy to follow installation instructions, easy to install.

- Reviewed: 09/02/2019 by Michael Haines

First Alert Hardwired Smoke Alarm with Battery Backup - 9120B

This was a direct replacement for previous smoke alarm -easy install

- Reviewed: 08/30/2019 by Ronald Gliot

First alert smoke alarm

Exact replacement for my old detector installed with little effort

- Reviewed: 08/23/2019 by Herbert White

Best smoke alert on market

I am a general contractor and I would recommend the first alert smoke detector to any one who wants the best. I accidentally started a fire in my oven while broiling and it saved our home.

- Reviewed: 08/19/2019 by Ronald Pearson

RON

EASY TO HOOK UP

- Reviewed: 08/14/2019 by Ken Turner

Product is as presented. Delivery took far too long to receive.

- Reviewed: 08/07/2019 by Will Estes

Smoke Detector.

Easy to install and works perfect.

- Reviewed: 08/05/2019 by jeff kar

Replace older First Alert 4

Ordered to replace older than 10 yrs in my house they where in it when I bought it. They were made in 2005. Fit perfectly did not have to change mounts just unplugged turn and reinstall and plug back in

- Reviewed: 08/05/2019 by Mike N

Excellent Replacement

Excellent replacement with identical plug and same size base.

- Reviewed: 08/05/2019 by David Yoon

Hardwired smoke alarm

I installed these for the bedrooms to replace an older model. Works well and installs easily. Also like the clean look of this smoke alarm.

- Reviewed: 08/02/2019 by Ranae Jenkins

9120B

Very fast delv of items & new product stamp and very good quality

- Reviewed: 07/31/2019 by Kent Wright

Very good product. We ordered ten units

- Reviewed: 07/31/2019 by EFSTATHIOS TOURNAS

Great Product

Very happy with the product, been using First Alert for over a decade and it works great

- Reviewed: 07/22/2019 by Robert Allen

Smoke Detector

Very easy to install and good quality

- Reviewed: 07/22/2019 by Don McConnell

The items in question were installed by members of the local fire department. They said that they had improvements and were impressed with the 10 year warranty

- Reviewed: 07/16/2019 by Kevin Beyer

9120B installation

Was replacing an old 4120B with a 9120b alarm. Easy to install the new base and the wiring was the same

- Reviewed: 07/09/2019 by rudy aguado

EXCELLENT SMOKE DETECTOR. EASY TO INSTALL.

- Reviewed: 07/08/2019 by Jacobus Greeff

Great product...Great Price

Easy to install with everything you need to keep your family safe included.

- Reviewed: 07/05/2019 by Julia Brown

Great price and great product

- Reviewed: 07/01/2019 by Parfit Frank

Happy happy

Found the best price on these product after searching on line and received it thru FedEx faster then I was expecting. I was very satisfied with the product, price and service.

- Reviewed: 06/24/2019 by Douglas Krok

First Alert 9120B

This was a direct replacement for my other 9120B that had expired due to its age. I am very happy with this unit because it's both hard wired and comes with battery backup. It's easy to install and has a sleek look to it.

- Reviewed: 06/24/2019 by Douglas Krok

First Alert 9120B

- Reviewed: 06/18/2019 by Robert Falkowski

GREAT

Just as I had expected!!!!

- Reviewed: 06/17/2019 by William H Folsom

Smoke Alarm

Easy to install and they work fine.

- Reviewed: 06/17/2019 by SGM Peter

First Alert Smoke Alarm

Safe at home with First Alert I use the 9120B throughout our home and have for 19 years. First Alert is not my FIRST choice. It's my ONLY choice.

- Reviewed: 06/14/2019 by Peggy Butler

Smoke alarms

Order was easy and installation all working I gave you a 5 rating thank you

- Reviewed: 06/13/2019 by Colette Doyle

First Alert Hardwired Smoke Alarm with Battery Backup - 9120B

Exactly as described. Thank you!

- Reviewed: 06/06/2019 by Ron Koehn

Had good service for 11 years. One alarm had couple of nuisance alarms. Same alarm still available which made an easy replacement.

- Reviewed: 05/28/2019 by Judy Smith

First Alert Smoke Alarms Are The Best!

These smoke alarms are the best. They are easy to install, and I trust this brand to be the best. Nothing else compares. Good looking too!

- Reviewed: 05/20/2019 by Lyle Parkins

Smoke alarm

Best alarm you can buy not only smoke but carbon dioxide also

- Reviewed: 05/18/2019 by Michael Hastriter

Matching alarms

Good product came with dust shield to limit construction particles. Mounting plastic rings did not come with screws which was inconvenient. Devices took awhile to arrive but the price was very reasonable. Most importantly, these alarms matched the ones already in our home.

- Reviewed: 05/16/2019 by George Watson

First Alert Hardwired Smoke Alarm with Battery Backup - 9120B

Ordering was easy, shipping was prompt, installation was a simple swap out, and we are now set for another 10 years. Thanks First Alert!

- Reviewed: 05/07/2019 by Joan Steinberg

replaced 10 old alarms

First Alert customer service was great. Easy ordering and fast shipping. Best price on the internet. The real deal

- Reviewed: 05/06/2019 by Ralph Verni

Exactly what I ordered. Very happy

- Reviewed: 05/02/2019 by Dawn Cinker

Reliable company

This compnay always ships immediately and gives updates. I highly recommend

- Reviewed: 04/30/2019 by SGM Pete

First Alert Model 9120B Smoke Alarm

My choice for 19 years. Reliable and affordable.

- Reviewed: 04/30/2019 by Randall Arndorfer

Reviewing my purchase

Great product and very good price. A life saver!

- Reviewed: 04/29/2019 by Randall Rogers

Randy

Very pleased with first alert. Very easy to install and good price. Highly recommended

- Reviewed: 04/29/2019 by Randall Rogers

Randy

Very pleased. Simple operation and easy to install. Highly recommended.

- Reviewed: 04/18/2019 by Glen McPheeters

Perfect replacement

As my home is now 10 years old, some of the installed as new First Alert smoke detectors are beginning to fail. The low battery chirp doesn't stop even with a new battery. As such, I purchased a supply to replace them as needed. The replacements are a perfect plug & play replacement. Just unplug the old, plug in the new, and fit it on the existing ceiling plate. 1 minute job. Couldn't be happier, and, the price was right, with free shipping as well!

- Reviewed: 04/17/2019 by Mark Potter

smoke alarm 9120B

Arrived as promised. Each unit was perfect with Battery included. Easy installation. Great Experience with the entire order process.

- Reviewed: 04/06/2019 by Raul Pedrozo

Pete1955

Easy to install and worked perfectly

- Reviewed: 04/03/2019 by Shawn Long

works great

This smoke alarm works great and with all others in the house.

- Reviewed: 04/01/2019 by Phil Sellars

Just as ordered

Got this unit to replace a 10 year old First Alert installed in my home which wouldn't stop chirping. New unit was hard to install using the existing pigtail connector but finally managed to get seated. Other than that installation was simple.

- Reviewed: 04/01/2019 by William Banks

I purchased 7 of these smoke alarms to replace the ones that came with the home. It was a simple install and they look great. All were tested and worked. Delivery was fast and the ordering procedure easy.

- Reviewed: 04/01/2019 by Andrew Masone

Easy Install, next time I'm getting the sealed 10 year battery!

- Reviewed: 03/30/2019 by Home owner

Easy installation

I bought the condo with expired fire alarms. I found out when I was planning to sell 5 years later. The original brands were fire alert. I watched multiple videos on YouTube on how to install. Luckily the original power connectors could still be plugged into new alarms, saving me electrician charges.

- Reviewed: 03/25/2019 by Susie Knight

Very good product

I have been using these smoke alarms all over my house. They work great. They are a good, reliable product.

- Reviewed: 03/23/2019 by John Dawson

9120B installs

Arrived in great condition. Easy to install as they were a replacement for the exact unit that was installed for 14 years. Only had to replace 2 of the trim holders as the older ones were slightly off in color compared to the new alarms. Easy to replace those with loosening of 2 screws. Every one worked fine after the install with no issues.

- Reviewed: 03/19/2019 by Richard Molnar

Replacement alarms

I purchased replacement alarms identical to the ones that came with my house and were 10 years old. They were easy to install and work as flawlessly as my other alarms.

- Reviewed: 03/18/2019 by Robert Sutphin

Perfect replacement

Needed to replace a fire alarm that had begun to malfunction. The new one arrived quickly, packaged well and I was able to plug it in without replacing the base.

- Reviewed: 03/18/2019 by Judith Baker

Easy to install. Didn't need an electrician for hardwire if replacing with like kind.

- Reviewed: 03/18/2019 by Taher Mohammed

Tom

Product worked as expected and was also able to communicate with other alarms in the home.

- Reviewed: 03/15/2019 by William E

Great price!

The price was great. Cheaper than anywhere else. Fast delivery. No fire or smoke, so I can't comment on how well it works.

- Reviewed: 03/14/2019 by Floyd Schmitz

9120B

Ordering was very simple and the service was fast. Was able to replace my older First Alert smoke alarms eight in all in about 90 minutes. This included replacing the ceiling brackets. Yes, the new smoke alarms were compatible to the old brackets, but for a cleaner look it was easy to replace the old brackets with the new ones. I was very pleased that the smoke alarms came with the 9-volt batteries.

- Reviewed: 03/14/2019 by Shawn Long

It connects with all the other ones we have

This was easy to install and connects with all the others we have.

- Reviewed: 03/12/2019 by Gerald Lomashewich

Quick and easy swap out

Replaced an earlier version of this smoke detector. The new detectors used the same hardwire connection as the old one. Just had to replace the base on the junction box and put on the new smoke head. Easy! and my house is up to date for another 10 years. Great service and shipping from the First Alert online store. If you need First Alert products, just go to the online store. They will have what you want.

- Reviewed: 03/11/2019 by Brian Hernandez

No Problems

No issues. I tried calling on the weekend, but Sales Desk apparently is only open on weekdays. I called the service number and, since the smoke detector that I was replacing was over ten years old, the service desk helped me to ID the proper replacement model. I then went and ordered it online. Product arrived less than a week later. All good.

- Reviewed: 03/11/2019 by Mark Messina

Perfect Match

The smoke detectors that I needed to replace were old, this unit was the exact fit and the plug for the wiring was the exact match. Very easy to install!

- Reviewed: 03/05/2019 by Garth Lien

Safe Now

Instructions very clear. Easy to replace existing smoke/fire alarms. Came with all the parts needed. Replace all the ones in our house.

- Reviewed: 03/05/2019 by Milton Karl

Perfect, Quick Service, Right Price

Everything you want, Great price and service

- Reviewed: 03/05/2019 by Justin Sabelman

Fast to ship! Good Product!

- Reviewed: 03/04/2019 by Joe DeChristopher

Thanks!

Good Customer Service. Fast and free ship! It's ALL good.

- Reviewed: 03/01/2019 by Robert Bujakowski

Very good product

- Reviewed: 03/01/2019 by YILI Pan

Smoke

good product

- Reviewed: 02/28/2019 by sriram Sagi

Good One

good price

- Reviewed: 02/25/2019 by Vasilii Spirkin

Great purchase!

Lowest prices, convenient online store, fast shipping and good packaging. Will buy again here! PS. All 3 new smoke alarms work well so far, came with 9V batteries and work with 9v rechargeable batteries also. Easily installed I have same connector but older base is different size - replaced in a minute. Have it for a week and no chirping so far.

- Reviewed: 02/18/2019 by Michael Karwatsky

Fast efficient service

The product was an exact match... Reasonably priced !

- Reviewed: 02/18/2019 by Michele Fiacco

Very pleased with purchase

Out of the box, pull battery activator out and plug in. My first alerts had about 2 years left on warranty. I decided to replace all 11 as to not have a house inspector and new buyer nickel and dime me to death.

- Reviewed: 02/15/2019 by Shawn Long

works great

Fits with all the others in the system.

- Reviewed: 02/15/2019 by HARRY PATTERSON

Fire Alarm

Perfect in every way

- Reviewed: 02/15/2019 by Louis Simmons

Smoke Detector

I had built my house in 2002 and installed all the required smoke detectors and CO2 detectors. This year I had one that slowly chirped and finally realized that they all needing replacement. I feel safe again.

- Reviewed: 02/15/2019 by Bob Barrett

Excellent

- Reviewed: 02/15/2019 by Sally Stunkel

Smoke Alarm

Easy to install, easy to order

- Reviewed: 02/14/2019 by YILI Pan

Smoke

VERY GOOD

- Reviewed: 02/12/2019 by Wayne Litschge

Good product

very good same as one I replaced.

- Reviewed: 02/11/2019 by Ronson Rajopa

Smoke Alarm

Great service and product. Was very Happy when the smoke alarm was received the 9v battery was included.

- Reviewed: 02/11/2019 by Dawn CINKER

5 star rating

I am very impressed with the ease of ordering along with the quickest that I receive my order and it is accurate each time

- Reviewed: 02/11/2019 by Richard Krausse

Trusted brand, quality product.

I have great confidence in this smoke alarm. It has a long ten year life and is easy to install. I feel secure knowing my family is protected at a very reasonable price.

- Reviewed: 02/11/2019 by Bob Barrett

first alert

Good service

- Reviewed: 02/11/2019 by Edmund Hayes

Great Inexpensive Smoke Detector

Installed in minutes. Works perfectly when tested. Does the job at a low price without sacrificing safety.

- Reviewed: 02/10/2019 by Dev

Great product and service

I recently replaced all my smoke detectors with these. They work great and easy to install. Customer service was great as well.

- Reviewed: 02/10/2019 by Ram

Excellent Product

Easy install, very quick delivery, very satisfied

- Reviewed: 02/08/2019 by Pamela Holmberg-Wertz

great product!

These smoke detectors are top shelf! Love it! Very easy installation and quality.

- Reviewed: 02/05/2019 by George Johnson

It was virtually plug and play and went very easily and well

- Reviewed: 02/05/2019 by Ron LeGrand

Detectors

We purchased five smoke detectors for our condo which replaced the original ones. First alert store is one of the best if not the best online company I've dealt with for any type of product. The service delivery, pricing, online help was simply outstanding. We have recommended first alert store.com to the managing company at our condo and encouraged all people to replace their units by using first alert store.com. They are simply the very best.

- Reviewed: 02/04/2019 by Tim White

Replacment

Worked great to replace an older unit!

- Reviewed: 01/31/2019 by Bob Zierden

As advertised

Easy to install. I installed all seven in less than an hour.

- Reviewed: 01/31/2019 by Terry Penton

Replacements

Thanks for the replacements I needed. They are great to have them working again.

- Reviewed: 01/28/2019 by Duniel Fernandez

Just great!!!

- Reviewed: 01/28/2019 by Michael McGinley

Michael

Great product and easy to install.

- Reviewed: 01/26/2019 by Miriam Gomez

Great protection

These smoke alarms are very reliable, I have been using them since 2005 and the electricians installed them.

- Reviewed: 01/25/2019 by William Rousseaux

Replaced 20 year old alarms

As advertised, these alarms installed easily. They tested good after the install. The green light is on. No more false alarms at 2AM, as the old original alarms did. I will replace them again in ten years.

- Reviewed: 01/22/2019 by Aron Roseman

Order was exactly what I expected it's working fine great price.

- Reviewed: 01/22/2019 by Jerry Schlebach

Professional Company

Professional Customer Service I replaced 5 smoke alarms 9120B after 12 years. Thank You for your help! Just unplugged old ones and plugged in NEW ones now I can sleep.

- Reviewed: 01/21/2019 by Garth Lien

Easy replacement

Easy to replace the pigtail for the new smoke detectors. All tested good. Easy directions. The mounting plate is larger than the original. Makes for a nicer visual fit. Mounting plate has many different screw pattern options. Battery access is very convenient. Would order them again. I ordered from the First Alert store fast shipping.

- Reviewed: 01/21/2019 by Shawn Long

It connects with the group

We had 1 go bad and ordered this one which is the newer model of the rest of the house. All I had to do was install this with the base it came with and connected it up. All other detectors love it so I'm guessing it works. Lights show good.

- Reviewed: 01/17/2019 by Brian Bishop

Smoke Detector

Great deal on 5 smoke detectors. Very easy to install. Would buy again.

- Reviewed: 01/16/2019 by John Klus

Unit replaced existing ones with direct plug in replacement. Quick and easy installation.

- Reviewed: 01/16/2019 by Gloria Markham

First Alert Review

Perfect replacement. Thank you.

- Reviewed: 01/15/2019 by Ashley Donnelly

Replacement

Bought to replace and old smoke alarm and it fit perfectly. It was also delivered as promised.

- Reviewed: 01/11/2019 by Robert Jarosik

Smoke Detector

Until I have a fire, I really can't review this product because I don't smoke. Your service was great.

- Reviewed: 01/10/2019 by Michelle Howard

Easy Replacement

Easy plug in to replace old unit with new one. The old units were the same model and lasted for 10 years.

- Reviewed: 01/10/2019 by YILI Pan

Smoke

very good

- Reviewed: 01/09/2019 by Rick Crosby

Purchased

Happy with the product and online shopping experience the free shipping was good but very slow

- Reviewed: 01/08/2019 by Mark Brannon

A great Smoke Alarm

First Alert Hardwired smoke alarm with Battery Backup is a great product to put in your home. This alarm system have not let me down in no emergency situation. Even when my wife is cooking this alarm goes off when shes in the kitchen burning food. So I'm pleased with this product in keeping my home safe thanks First Alert.

- Reviewed: 01/05/2019 by Katie Patel

Good purchase

Everything was good, items were good too. Nice buying from this website.

- Reviewed: 01/02/2019 by Edward wetmiller

replacing a smoke alarm with battery backup

We needed to replace a 9120B and the first alert store was the least expensive place I found. and it offered free shipping and no sales tax. all around winner!

- Reviewed: 01/01/2019 by Rohan Seneviratne

Hard Wired Smoke Alarm 9120B

Replaced 2 smoke alarms within a few minutes and they are working perfectly.

- Reviewed: 12/29/2018 by Ivan Ashford

Works great. fast delivery

- Reviewed: 12/29/2018 by robert goldberg

Smoke detector

Replaced previous detector- easy to do - starting working right away previously

- Reviewed: 12/28/2018 by Vickie Golden

Great Product!

I replaced 4 smoke detectors in my home. It was quick, easy, and also cost effective. I really appreciated the good quality 9 volt batteries that came with!

- Reviewed: 12/27/2018 by YILI Pan

Smoke

excellent product

- Reviewed: 12/25/2018 by David Dettmann

Homeowner

Our home detectors are 11 years old and starting to fail. The new ones replaced those that have gone bad. Very easy since they are same model. Just plug in new unit and I'm back in business. I will order a couple more for back ups.

- Reviewed: 12/24/2018 by michael sedillo

Additiondecided to place in garage

Decided to place one in garage to be perfected great product

- Reviewed: 12/11/2018 by Robert Beadle

Exact replacement part

This was a replace for 18 year old units. It went into place exactly as the original.

- Reviewed: 12/10/2018 by ANTHONY CONGRAM

Efficient and Cost-effective

Ordered and obtained plug & play replacement detectors for entire house 7. Saved ~$10 over big box stores, and also did not need to wire-in new system plugs. Saved time, saved $$ Package arrived quickly. Good project. Thanks!

- Reviewed: 12/10/2018 by Shopper

Works great. Thank you

Hardwired it with other alarms. Works great. Thank you

- Reviewed: 12/10/2018 by michael moore

perfect

Perfect

- Reviewed: 12/04/2018 by Michael Lansky

Piece of mind

I have been using First Alert for years and have been very pleased with their products. This alarm is replacing one that was reaching the 10 year replacement cycle. I expect to have 10 years of trouble free service for this alarm.

- Reviewed: 12/04/2018 by Graham Putnam

Plug and Play

Unplug the old and plug in the new. Could not be easier. Received the package earlier than expected.

- Reviewed: 12/04/2018 by Philip Deslandes

5 in pricing and product

- Reviewed: 12/03/2018 by Tiffany Vincent

Completely Satisfied

Originally ordered two, and then went back and ordered three more. Easy to install.

- Reviewed: 11/28/2018 by Ning Mou

Good merchandise

It's a very good product!

- Reviewed: 11/28/2018 by Rose Torrey

First alert smoke alarm

Very good

- Reviewed: 11/27/2018 by Ray

Works as intended

Great product, will be purchasing again!

- Reviewed: 11/26/2018 by Wendy Johnson

Review

These are the only smoke alarms I have ever used in my house they are sensitive but for good reason I know these alarms would save mine and my family's life's due to being in working order I will be buying some more in the future also will refer to friends and family

- Reviewed: 11/26/2018 by A.W.

Arrived on time and product was not damaged during shipping.

- Reviewed: 11/26/2018 by Vipul Patel

excellent products & service

Look forward to more business with you.

- Reviewed: 11/26/2018 by James Rourke

They Work Great!

I purchased 6 detectors to replace the same model detectors that were 10 years old. Detectors plugged into existing connectors and base rings. No problem. They work great.

- Reviewed: 11/24/2018 by Jerry Palla

9120B-

Easy to install and they really work great

- Reviewed: 11/19/2018 by Wolfgang Labza

smoke alarm

fast delivery and simple / quick replacement of the old device.

- Reviewed: 11/19/2018 by Sandra Peavey

Very pleased

Very happy with purchase. Received items quickly and at a lower price than Lowes.

- Reviewed: 11/12/2018 by Diane Lyle

Great Job. Order was easy and received right on time. Thank you very much

- Reviewed: 11/06/2018 by Dawn Cinker

fast service

love the ease of ordering and the fast shipping.

- Reviewed: 11/06/2018 by Anthony DiSanto

My Saturday Afternoon

Changed out 10 year old detectors with these units, simple. All 10. They look nice, cause my wife said they had to be nice looking, really! ok fine. It's Saturday and it might be date night so... Actually I had her replace one or two. Easy battery replacement access, interconnected testing modes, cute lights and not expensive. One note, this model use ionization so you might want to use a photodect model in your kitchen like I did since even turning the oven on made it go off. Maybe I should get her to clean oven, no! Different model, same brand and of course it look the same. Enjoy you Saturday!

- Reviewed: 11/03/2018 by Bruce Hettleman

Exact replacement

This unit was purchased to replace an aging but identical unit that continued to beep after battery replacement. The old unit was dated 2011. Must have timed out. New unit stopped the problem. It was very reasonably priced and fits the old wiring exactly. Quick fix. I bought an extra one.

- Reviewed: 11/02/2018 by DOUGLAS LADD

Good product

Good product. Have had 10 running well for 20 years. Had to replace 2 and they are working just fine. Fast delivery Thanks.

- Reviewed: 10/23/2018 by Dawn Cinker

Quick service, perfect replacement for our old alarm

- Reviewed: 10/22/2018 by Judith Golab

Very Good

I was surprised with quick phone support validating the model I need to replace I was correctly ordering. All items arrived quickly - easy install and came with batteries- surprised. Recommending to all friends replace units - you will feel safer - mine were 14 years and over due

- Reviewed: 10/18/2018 by Richard Dimmick

Great Product

USPS managed to smash padded envelope smoke detector was packed in but detector OK.

- Reviewed: 10/18/2018 by Jie Zhang

Good

I bought it to replace a malfunction one which was 6 year old.

- Reviewed: 10/03/2018 by David

Alarm meets needs

Product was a replacement for an older version. Installation was easy. Will know if very good is warranted when and if situation occurs.

- Reviewed: 09/19/2018 by Robert Taylor

The alarms were as I had ordered and, although they have not alarmed I believe they will function properly.

- Reviewed: 09/13/2018 by Dawn Cinker

smoke alarm

Product was exactly the right detector to replace our old one. good email updates on shipment status

- Reviewed: 09/13/2018 by Harry Colvin

Good Response

Order was received quickly

- Reviewed: 09/10/2018 by Alexander Pamphilis

Smoke Alarm

Very happy with the speed of the delivery. I installed these myself.

- Reviewed: 09/05/2018 by Heather Marsh

Where???

Alarm seems great, but where do I put it??? Help please!!!

Customer Service Response:

Hey there, Heather. The NFPA recommends that homes should have smoke alarms installed inside every bedroom, outside of each sleeping area and on every level of your home, basement included.

- Reviewed: 09/04/2018 by Robert Murphy

Item still not received since ordering 2 weeks ago???

Customer Service Response:

Thank you for contacting us, Robert. A customer service representative will be contacting you shortly. They will provide answers to all of your shipping inquiries.

- Reviewed: 08/25/2018 by Greg Bloskey

Replacement ionization

Good dependable units. I've had twelve BRK alarms interconnected across my property for 20 years now

- Reviewed: 08/15/2018 by Samuel Alberti

This my second First Alert smoke alarm systems. I use 4 for my house , very to reinstall . Never had a problem with my other expired units. I highly recommend First Alert.

- Reviewed: 08/06/2018 by Vincent Casolaro

Very good

Came back to buy a bunch more.

- Reviewed: 08/03/2018 by Mark Zuc

Great price for a solid alarm

Had these delivered within days and installed within minutes. Had my original First Alert smoke alarms for 10 years so it was time to replace them, these worked perfect, very happy!

- Reviewed: 07/23/2018 by Vincent Casolaro

Great product

Works as expected, exactly what I needed to plug into my existing system.

- Reviewed: 07/19/2018 by Richard Krausse

Lowest price plus from the factory store.

I was surprised to find the best price for my alarm at the factory store. It gives me 100% confidence that I bought a genuine First Alert product and not a possible counterfeit one.

- Reviewed: 07/13/2018 by STEPHEN PLACE

easy install

This unit presented a challenge. The electrical box had wires in it but they had never been stripped. So I stripped the wires, attached it and VOILA! it tested fine with the system.

- Reviewed: 07/13/2018 by STEPHEN PLACE

easy install

I ordered this smoke to replace a similar unit. Easy peezie! Just plugged it in and reattached it to the existing ceiling bracket.

- Reviewed: 07/09/2018 by Louis Brandstetter

Excellent

- Reviewed: 07/05/2018 by Richard Krausse

Paid less than anywhere else on the internet

So surprised to order something from a factory store and pay less than found on other sites on the internet. It was quickly shipped and received.

- Reviewed: 07/04/2018 by Jennifer Baker

Perfect

Item was exactly what I needed. It arrives quickly and shipping was free. I will definitely be shopping with First Alert again.

- Reviewed: 06/26/2018 by alberta connelly

Total Satisfaction

I received my second order for two. 1st order by son. Handy to have them on hand for my aging new house!

- Reviewed: 06/14/2018 by M Mermelstein

Great product

I replaced a First Alert alarm like the one I had. For some reason it just kept chirping and new batteries made no difference. After checking several local retail stores and not finding an alarm like the one I had, I found the exact model online at First Alert. The order process was fairly easy and the alarm actually arrived ahead of the anticipated delivery time. The alarm was exactly like the one I had. I am totally non technical and would not attempt the installation so I had a friend install it and apparently the process was fairly easy and the alarm immediately worked when installed. Am very pleased to have been able to replaced an alarm with the exact model I already had. Very pleased with the entire process from ordering to receipt to installation and am quite pleased with the alarm.

- Reviewed: 06/13/2018 by Venkata Paturi

Easy to Replace 9120B

I bought a 9120B smoke alarm to replace an existing defective one. I just changed the smoke alarm not the base. It is very easy to replace. The new alarm is working fine and there is no issue. However, the product is delivered later than the promised date.

- Reviewed: 06/09/2018 by Joseph Cudzynowski

Simply Good

Order handled efficiently. Promptly shipped.

- Reviewed: 05/23/2018 by Van Robinson

These were the smoke alarms that were installed in our home when I bought it in 2010. They have worked well since we moved in, and since the house was built in 2007, I figured it was time to replace them. That's why I ordered the same model that we had already.

- Reviewed: 05/17/2018 by Mary Lydon

Delivery was very good and packaged properly. Easy to find what I needed on your website.

- Reviewed: 05/11/2018 by Bill Wickham

Quite pleased

- Reviewed: 05/10/2018 by Charles Yates

Easy Peasy

Nothing I hate worse than trying to figure out what alarm is beeping at 3 am and why a new battery doesn't stop it! Simple solution replace the alarm. First Alert store makes the process easy and inexpensive.

- Reviewed: 05/09/2018 by Charles Schudson

Excellent!

I ordered five First Alert smoke alarms to replace my old ones. The price was a fraction of what I would have paid at Home Depot. The ordering was easy the delivery was prompt. The installation was easy. Thank you!

- Reviewed: 05/07/2018 by Christopher Walker

Excellent smoke alarm

Easy to install. Excellent smoke alarm

- Reviewed: 05/03/2018 by Melvyn Zahn

very good service

- Reviewed: 05/02/2018 by Terry Smith

Happy

They came quickly and work great, they were replacements for old ones.

- Reviewed: 04/17/2018 by Stella McMichael

Great product

Dealing with this company was easy with fast delivery....Product was easy to install and true product description.

- Reviewed: 04/16/2018 by Devin Reed

Great product. Thank you!

- Reviewed: 04/03/2018 by gerson shapiro

Happy customer

excellent product--great service. Thank you....

- Reviewed: 04/03/2018 by stephen mustacchio

Smoke alarm

Easy to install.

- Reviewed: 04/03/2018 by Marvin Ray

I decided to replace 5 of my First Alert Smoke Detectors because they have been used in my home for about 13 years. I contacted First Alert to obtain the correct replacement model for what I currently had. I wanted to make sure the new Model would just plug into the existing hard wire models. I was assured they would plug in the the hard wires without any problem. This was the case and all 5 First Alert Smoke Detectors are installed and working as required.

- Reviewed: 04/03/2018 by Robert Toth

Price at First Alert was lower than hardware stores....easy to install...quick delivery....would highly recommend...

- Reviewed: 03/27/2018 by Evan Hammer

Smoke Alarm

Product works well. Never had any issues with them. The item was received faster than they estimated.

- Reviewed: 03/20/2018 by Sally Spencer

Easy Peasy

The units were easy to install. They are neat looking and work well.

- Reviewed: 03/19/2018 by John La Duke

Wired Smoke Alarm

Clear instruction. Easy install. Great price

- Reviewed: 02/26/2018 by Richard Smith

Service Dept. A#1 !

Our old Alarms went off in the middle of the night , First Alert Service Dept. said they were at the end of life and need to be replaced , ordered , replaced , great price ! Very Happy ! A-1

- Reviewed: 02/22/2018 by Geoff Burrows

Excellent!

Great design, clear instructions, easy install!

- Reviewed: 02/21/2018 by Keith Kitchens

First Alert alarm

Just the product I needed. Needed to replace a broken unit. Replacement was quick and simple.

- Reviewed: 02/14/2018 by Vetta Nelson

Great product

- Reviewed: 02/12/2018 by Richard Meister

Great

Ordered replacement smoke detector for my condo from First Alert. They arrived within days, fit the existing mounting screws as I was told, work perfectly and at a very reasonable price... very satisfied customer.

- Reviewed: 02/08/2018 by Gaylan Gallacher

We love the First Alert products. They are manufactured with precision and are dependable. I replaced the ones in our home that were ten years old with this recent order.

- Reviewed: 02/06/2018 by Paul Nunemann

New smoke detector

It was great to have an easy to read and easy to order web site. The website even helped determine if I needed a new detector. When it arrived it was just what I needed with super easy instructions. Price was reasonable too.

- Reviewed: 02/06/2018 by David Hall

Very satisfied

Online order process user friendly, product shipped promptly after order, great value on product which arrived in good condition. Plans to review other products for purchase in near future.

- Reviewed: 02/02/2018 by James Clark

I purchased this as a replacement to an original alarm which was damaged. It performs very well with no problems at all.

- Reviewed: 01/30/2018 by Robin Amadea

Smoke alarm

I needed to replace my old smoke detectors. The replacements were easy to install and it was great knowing we are all safe again.

- Reviewed: 01/29/2018 by Harold Barras

Smoke Alarm replacement

Home 10 years old..alarms chirping. Replaced with same alarm and working fine. Only received 9 units of 10 ordered. Called and 10th unit promptly sent out. Good service. Thank you.

- Reviewed: 01/25/2018 by Ed Daniels

Perfect replacement

Ordered one to replace the same unit in the hardwired system. A perfect fit. Two minute install.

- Reviewed: 01/25/2018 by Kelli Cobb

Easily changed old detector with new one. Just snaps right in.

- Reviewed: 01/24/2018 by Craig Thomson

Pleasantly surprised that batteries were included

- Reviewed: 01/23/2018 by Carol Weber

10 yr Replacement --- models still exist

Was able to replace all of my original smoke alarms with the same identical models after 12 years. My dog is very happy that the loud chirps intermittent chirps from different alarms has stopped. Our area has been known for intermittent electrical interruption so I wasn't immediately thinking it was an issue with the actual smoke detectors. Once they were all switched the problem was solved. until the next electrical outage...

- Reviewed: 01/22/2018 by Heather Mabry

easy to install

Alarms are extremely easy to install. Easy to test and are extremely loud. You will know when there is a potential fire in your home.

- Reviewed: 01/22/2018 by Cassie

Awesome price and fast shipping. Thank you so much!

- Reviewed: 01/22/2018 by Tim Meyer

seems great

reasonable price, easy installation where I was replacing older ones,came with batteries, prompt shipping, very satisfied

- Reviewed: 01/20/2018 by Kamal Khoury

First Alert Hardwired Smoke Alarm with Battery Backup, 9120B

Great product, easy to replace comes with battery, free shipping. Now our new smoke alarm operates as it should, we are covered.

- Reviewed: 01/19/2018 by L CHARLES LENTZ

EASY INSTALL

LIVING IN NEW HOME 10 YEARS WITH 6 OF THESE UNITS. I BROKE THE LATCH CHANGING ONE OF THE BATTERIES AND WAS THRILLED THAT THE NEW UNIT WITH AN EASIER BATTERY LATCH COULD BE PLUGGED RIGHT INTO THE OLD WIRING. WELL PACKAGED AND SIMPLE ENOUGH TO DO MYSELF. THANK YOU

- Reviewed: 01/18/2018 by Hal Barcey

Thank you.

I am confident with first alert. I have one suggestion: Include a decal for putting on the install date on each alarm as they expire.

- Reviewed: 01/17/2018 by Rachel Mashburn

Smoke Alarms!

Smoke alarms are great and service was excellent. Received the order promptly. Thank you!

- Reviewed: 01/17/2018 by Lanny Kasner

lanny kasner

the hardwired smoke alarm that I ordered was easy to install, came in a timely fashion

- Reviewed: 01/17/2018 by Leslie Soldani

Very good

- Reviewed: 01/17/2018 by Kathi Hamilton

Perfect product, perfect quick service. Thank you.

- Reviewed: 01/10/2018 by Phoebe Dedonis

Works well. Installed with hard wired system. Arrived on schedule, well packaged & best price.

- Reviewed: 01/03/2018 by Patrick S Amello Sr

the best thank you! the lady that took my order was the best!

- Reviewed: 12/29/2017 by Robert Levine

Installed when received. Took the place of another of the same. 5 min to reinstall. Works fine

- Reviewed: 12/28/2017 by Les Soldani

Thanks for quick delivery!!

- Reviewed: 12/27/2017 by Kenneth Monday

Just what I needed

Bought 5 replacement smoke detectors, just what I needed. All I had to do was, plug them in and install on existing bases. Easy as could be! Thanks!

- Reviewed: 12/25/2017 by JAMES SCHOFFSTALL

PERFECT

Easy to install and works perfectly on both AC & BATTERY

- Reviewed: 12/05/2017 by Steve Meidlinger

Built to last

After nearly 8 years it was time to replace my old First Alert detectors. I was surprised the old ones would last this long but am sold on First Alert.

- Reviewed: 12/04/2017 by Jerry McClellan

The price was way below the other options. Service and shipment were quick, and it works great!

- Reviewed: 11/30/2017 by Laurie Hirsh

Very happy. Works well and we feel safe

- Reviewed: 11/15/2017 by Susan Garrity

Great Smoke Detector

Great product, easy to install, clean, sleek look.

- Reviewed: 10/31/2017 by Kenneth Chadee

Easy Installation!

Replacement units fit easily into the old base. Installation was very quick and easy to handle for an old guy.

- Reviewed: 10/30/2017 by Raymond Dunleavy

Easy to install

Received smoke alarm in timely manner. Swapped out old wire with new one provided and talked to tech help and it's working great. Thanks all

- Reviewed: 10/30/2017 by Dale Streufert

Great Product

Works great, easy installation for a 10 year old replacement.

- Reviewed: 10/26/2017 by Lewis Mello

Smoke Alarm/Battery

Unit functions perfectly

- Reviewed: 10/26/2017 by John Raaen

Fabulous

- Reviewed: 10/24/2017 by Charles Stauffer

3 hardwired/battery backup

I just installed the 3 units that I ordered and they are working just great! I am a Volunteer Firefighter since 1973. Every home should have several smoke and CO alarms.

- Reviewed: 10/19/2017 by donnie beach

Fast shipping/item as described/easy to install/great value

- Reviewed: 10/11/2017 by Michael Garren

Easy to order and get

Easy to order and get. Delivered ahead of schedule. Great value, exactly what I wanted

- Reviewed: 10/02/2017 by Jim Dobbins

Perfect Fit

This retrofit hardwired smoke alarm fit perfectly in the existing box although I did have to replace the mounting base. 9volt battery backup also.

- Reviewed: 09/30/2017 by Emily Tew

Easy to install

- Reviewed: 09/19/2017 by Asher Bronfeld

Smoke Detector

Works well- no problems so far

- Reviewed: 09/10/2017 by Fred Himburg

I guess Harvey made the delivery longer than normal. But the product arrived just fine.

- Reviewed: 09/09/2017 by DAVID JAY

good deal

Delivered as promised

- Reviewed: 08/28/2017 by James Kuntzelman

Rest Easy

Glad to have been able to replace existing 11 year old hard worded alarms. No more false alarms or midnight beeps.

- Reviewed: 08/10/2017 by Allen Masuda

Quick Delivery

The alarm arrived in two days. I quickly installed it and went into other things.

- Reviewed: 08/08/2017 by Kim

Great product

It was just what I was looking for at a great price! I couldn't be happier with the product and service!

- Reviewed: 07/17/2017 by Alvin Brewton

Fire Alarm hardware

Replacement unit for original equipment in home. Solved system problems and operating like a new system

- Reviewed: 06/14/2017 by Theodore Koch

smoke alarms

Interchanged with ones we had 10 years ago so easy to replace the old ones.

- Reviewed: 06/13/2017 by Robert Sines

Replaced 9 old 9120s with 9 new ones. All of them all worked perfectly. Only small hassle was mounting ring was a different diameter than the old ones but that is an easy problem to get past... 2 screws, half twist and it's done.

- Reviewed: 05/22/2017 by Terry Patti

Great service

Technical person Tiffany provided proper information to replace model that no longer existed. Sales dept. shipped product quickly and at a very reasonable rate.

- Reviewed: 05/08/2017 by David Syling

Easy installation. I replaced a bad unit with a new one. Works great

- Reviewed: 05/05/2017 by Byron Rieckman

Awsome Product

Well I installed a system of 9120b interconnected smoke alarms and they worked better than the older product, a brk smoke detector which had outlived its usefulness. I recommend you use First Alert/BRK products

- Reviewed: 04/28/2017 by J COLLINS MEEK

Great product, great service

Got the right product in jig time to install throughout my home. So nice to know that the smoke alarm will last for ten years with timely battery changes! - Doc Meek, South Jordan, Utah

- Reviewed: 04/24/2017 by Don Weiss

Quality and simple installation

Once I received the new First Alert smoke alarms, I was pleasantly surprised to find both contained batteries. Installation was less than 5 minutes to replace both bad units. Great product!

- Reviewed: 04/17/2017 by Mark Schneider

Fair Price easy to match P/N with existing smoke alarms and reasonable shipping time

- Reviewed: 04/03/2017 by Jovito Tabares

compatible with existing wiring.

- Reviewed: 03/14/2017 by Kurt Eddy

Pleased with product and service

The person that took my order was knowledgeable and kind. The products arrived quickly. I was motivated to replace my alarms due to a house fire in my region and that killed three children.

- Reviewed: 02/21/2017 by RET CW4 Owen McDaniel

Review of 9120B Alarm

The item was the exact replacement as need. Worked properly and easy to install.

- Reviewed: 01/27/2017 by BR

Smoke Detector

This smoke detector is better then the Kidde product I used to have, when I sometimes over cook foods this alarm goes off quickly, the older Kidde product took a while to activate. I'd recommend this smoke detector to anyone who is looking to upgrade their units.

- Reviewed: 01/26/2017 by William Sydnes

Good price - very easy to install and works great. I installed a LONG life battery Vs the one which came with it.

- Reviewed: 01/06/2017 by Michele Chapman

Wired smoke alarm

This was a replacement. Easy installation. Works great.

- Reviewed: 01/05/2017 by Mark Toussaint

9120B Smoke Alarms

Arrived quickly, easy install, all 7 work great

- Reviewed: 01/04/2017 by douglas wiseman

protected again

Replaced 6 hard wired smoke alarms-product as described. Easy replacement. Good price and quick delivery.

- Reviewed: 12/20/2016 by thomas cychosz

Order was filled and delivered quikly

- Reviewed: 12/16/2016 by Michael COFFEY

Unit replaced smoke alarms which were older than 10 years. They are hardwired into the electrical system. Test as good.

- Reviewed: 11/14/2016 by Francine Finn

Received quickly. Fit as technician indicated. Would use company again.

- Reviewed: 11/10/2016 by Lori Krautkremer

found the exact model that I needed at your on-line store. Ordering was quick and easy and I received my purchase within a week. Placed a second order a week later and also received them within a week. Very pleased with the product and the service.

- Reviewed: 11/08/2016 by Sue Morgan

The product that I purchased was really quality and it arrived on time to my door, the customer service person was very professional and helpful, in the future if I need any of your products, it will be my pleasure to go through the same experience again.

- Reviewed: 11/08/2016 by Barbara Schoeff

Easy to replace

Got the smoke alarms in a timely manner, put them in to replace two that were malfunctioning and we are good to go. The originals lasted 6 years. Thanks for the good service!

- Reviewed: 11/01/2016 by Alfredo Delos Santos

The product was as advertised and worked nicely all six of them.

- Reviewed: 08/29/2016 by Joseph Bergwerk

Installed it today-No problem-works fine

- Reviewed: 08/29/2016 by Paul Janssen

Very pleased with the delivery time. Everything I needed was included. Fast and easy installation.

- Reviewed: 08/28/2016 by John Ames

Quick Service

Quick Service Easier then searching at home improvement stores for exact model.

- Reviewed: 07/13/2016 by Andrew Sanfelippo

I've installed the alarms and so far no problems.

- Reviewed: 07/07/2016 by Anthony Leonardo

Ordered these as replacements for 11 year old alarms. They were advertised as direct replacements and they were. Plugged into old wiring harness with no problem.

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Pre-Order Questions

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12 Pack Bundle of First Alert Hardwired Smoke Alarm with Battery Backup - 9120B

Hardwired Smoke Alarm with Battery Backup:

How to Install First Alert 9120B Hardwired Smoke Alarms:

Connecting First Alert Hardwired Alarms to 120V Wiring

Mounting First Alert Hardwired Alarms

Installing Additional and/or Interconnecting First Alert Hardwired Alarms

Restoring Power and Testing Hardwired Alarms

Customer Reviews

5

Pre-Order Questions

Shipping Policy

Order Status

Return Policy

12 Pack Bundle of First Alert Hardwired Smoke Alarm with Battery Backup - 9120B

Hardwired Smoke Alarm with Battery Backup:

How to Install First Alert 9120B Hardwired Smoke Alarms:

Connecting First Alert Hardwired Alarms to 120V Wiring

Mounting First Alert Hardwired Alarms

Installing Additional and/or Interconnecting First Alert Hardwired Alarms

Restoring Power and Testing Hardwired Alarms

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Customer Reviews

5