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
SKU: 9120B
Price: 113.40 USD
Availability: InStock
Rating: 5 (166 reviews)

Ionization Wired In Smoke Detector

Availability: In Stock

Regular: $239.40

Price: $113.40

You Save: $126.00

- 166 Customer Reviews

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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

Hardwired Smoke Alarm with Battery Backup Features:

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).
10 Year Limited Warranty.
Emits T3 Pattern.
Product Dimensions (LxWxH): 5.6 x 1.9 x 5.6 in.
Product Weight: .60 lbs.

Product Specs

UPC:

029054015327

MPN:

9120B

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Average Rating Based on 166 reviews: (5)

Professional Company - 01/22/2019
Reviewer: Jerry Schlebach
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.

Easy replacement - 01/21/2019
Reviewer: Garth Lien
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.

It connects with the group - 01/21/2019
Reviewer: Shawn Long
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.

Smoke Detector - 01/17/2019
Reviewer: Brian Bishop
Great deal on 5 smoke detectors. Very easy to install. Would buy again.

- 01/16/2019
Reviewer: John Klus
Unit replaced existing ones with direct plug in replacement. Quick and easy installation.

First Alert Review - 01/16/2019
Reviewer: Gloria Markham
Perfect replacement. Thank you.

Replacement - 01/15/2019
Reviewer: Ashley Donnelly
Bought to replace and old smoke alarm and it fit perfectly. It was also delivered as promised.

Smoke Detector - 01/11/2019
Reviewer: Robert Jarosik
Until I have a fire, I really can't review this product because I don't smoke. Your service was great.

Easy Replacement - 01/10/2019
Reviewer: Michelle Howard
Easy plug in to replace old unit with new one. The old units were the same model and lasted for 10 years.

Smoke - 01/10/2019
Reviewer: YILI Pan
very good

Purchased - 01/09/2019
Reviewer: Rick Crosby
Happy with the product and online shopping experience the free shipping was good but very slow

A great Smoke Alarm - 01/08/2019
Reviewer: Mark Brannon
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.

Good purchase - 01/05/2019
Reviewer: Katie Patel
Everything was good, items were good too. Nice buying from this website.

replacing a smoke alarm with battery backup - 01/02/2019
Reviewer: Edward wetmiller
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!

Hard Wired Smoke Alarm 9120B - 01/01/2019
Reviewer: Rohan Seneviratne
Replaced 2 smoke alarms within a few minutes and they are working perfectly.

- 12/29/2018
Reviewer: Ivan Ashford
Works great. fast delivery

Smoke detector - 12/29/2018
Reviewer: robert goldberg
Replaced previous detector- easy to do - starting working right away previously

Great Product! - 12/28/2018
Reviewer: Vickie Golden
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!

Smoke - 12/27/2018
Reviewer: YILI Pan
excellent product

Homeowner - 12/25/2018
Reviewer: David Dettmann
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.

Additiondecided to place in garage - 12/24/2018
Reviewer: michael sedillo
Decided to place one in garage to be perfected great product

Exact replacement part - 12/11/2018
Reviewer: Robert Beadle
This was a replace for 18 year old units. It went into place exactly as the original.

Efficient and Cost-effective - 12/10/2018
Reviewer: ANTHONY CONGRAM
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!

Works great. Thank you - 12/10/2018
Reviewer: Shopper
Hardwired it with other alarms. Works great. Thank you

perfect - 12/10/2018
Reviewer: michael moore
Perfect

Piece of mind - 12/04/2018
Reviewer: Michael Lansky
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.

Plug and Play - 12/04/2018
Reviewer: Graham Putnam
Unplug the old and plug in the new. Could not be easier. Received the package earlier than expected.

- 12/04/2018
Reviewer: Philip Deslandes
5 in pricing and product

Completely Satisfied - 12/03/2018
Reviewer: Tiffany Vincent
Originally ordered two, and then went back and ordered three more. Easy to install.

Good merchandise - 11/28/2018
Reviewer: Ning Mou
It's a very good product!

First alert smoke alarm - 11/28/2018
Reviewer: Rose Torrey
Very good

Works as intended - 11/27/2018
Reviewer: Ray
Great product, will be purchasing again!

Review - 11/26/2018
Reviewer: Wendy Johnson
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

- 11/26/2018
Reviewer: A.W.
Arrived on time and product was not damaged during shipping.

excellent products & service - 11/26/2018
Reviewer: Vipul Patel
Look forward to more business with you.

They Work Great! - 11/26/2018
Reviewer: James Rourke
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.

9120B- - 11/24/2018
Reviewer: Jerry Palla
Easy to install and they really work great

smoke alarm - 11/19/2018
Reviewer: Wolfgang Labza
fast delivery and simple / quick replacement of the old device.

Very pleased - 11/19/2018
Reviewer: Sandra Peavey
Very happy with purchase. Received items quickly and at a lower price than Lowes.

- 11/12/2018
Reviewer: Diane Lyle
Great Job. Order was easy and received right on time. Thank you very much

fast service - 11/06/2018
Reviewer: Dawn Cinker
love the ease of ordering and the fast shipping.

My Saturday Afternoon - 11/06/2018
Reviewer: Anthony DiSanto
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!

Exact replacement - 11/03/2018
Reviewer: Bruce Hettleman
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.

Good product - 11/02/2018
Reviewer: DOUGLAS LADD
Good product. Have had 10 running well for 20 years. Had to replace 2 and they are working just fine. Fast delivery Thanks.

- 10/23/2018
Reviewer: Dawn Cinker
Quick service, perfect replacement for our old alarm

Very Good - 10/22/2018
Reviewer: Judith Golab
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

Great Product - 10/18/2018
Reviewer: Richard Dimmick
USPS managed to smash padded envelope smoke detector was packed in but detector OK.

Good - 10/18/2018
Reviewer: Jie Zhang
I bought it to replace a malfunction one which was 6 year old.

Alarm meets needs - 10/03/2018
Reviewer: David
Product was a replacement for an older version. Installation was easy. Will know if very good is warranted when and if situation occurs.

- 09/19/2018
Reviewer: Robert Taylor
The alarms were as I had ordered and, although they have not alarmed I believe they will function properly.

smoke alarm - 09/13/2018
Reviewer: Dawn Cinker
Product was exactly the right detector to replace our old one. good email updates on shipment status

Good Response - 09/13/2018
Reviewer: Harry Colvin
Order was received quickly

Smoke Alarm - 09/10/2018
Reviewer: Alexander Pamphilis
Very happy with the speed of the delivery. I installed these myself.

Where??? - 09/05/2018
Reviewer: Heather Marsh
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.

- 09/04/2018
Reviewer: 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.

Replacement ionization - 08/25/2018
Reviewer: Greg Bloskey
Good dependable units. I've had twelve BRK alarms interconnected across my property for 20 years now

- 08/15/2018
Reviewer: 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.

Very good - 08/06/2018
Reviewer: Vincent Casolaro
Came back to buy a bunch more.

Great price for a solid alarm - 08/03/2018
Reviewer: Mark Zuc
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!

Great product - 07/23/2018
Reviewer: Vincent Casolaro
Works as expected, exactly what I needed to plug into my existing system.

Lowest price plus from the factory store. - 07/19/2018
Reviewer: Richard Krausse
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.

easy install - 07/13/2018
Reviewer: STEPHEN PLACE
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.

easy install - 07/13/2018
Reviewer: STEPHEN PLACE
I ordered this smoke to replace a similar unit. Easy peezie! Just plugged it in and reattached it to the existing ceiling bracket.

- 07/09/2018
Reviewer: Louis Brandstetter
Excellent

Paid less than anywhere else on the internet - 07/05/2018
Reviewer: Richard Krausse
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.

Perfect - 07/04/2018
Reviewer: Jennifer Baker
Item was exactly what I needed. It arrives quickly and shipping was free. I will definitely be shopping with First Alert again.

Total Satisfaction - 06/26/2018
Reviewer: alberta connelly
I received my second order for two. 1st order by son. Handy to have them on hand for my aging new house!

Great product - 06/14/2018
Reviewer: M Mermelstein
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.

Easy to Replace 9120B - 06/13/2018
Reviewer: Venkata Paturi
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.

Simply Good - 06/09/2018
Reviewer: Joseph Cudzynowski
Order handled efficiently. Promptly shipped.

- 05/23/2018
Reviewer: 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.

- 05/17/2018
Reviewer: Mary Lydon
Delivery was very good and packaged properly. Easy to find what I needed on your website.

- 05/11/2018
Reviewer: Bill Wickham
Quite pleased

Easy Peasy - 05/10/2018
Reviewer: Charles Yates
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.

Excellent! - 05/09/2018
Reviewer: Charles Schudson
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!

Excellent smoke alarm - 05/07/2018
Reviewer: Christopher Walker
Easy to install. Excellent smoke alarm

- 05/03/2018
Reviewer: Melvyn Zahn
very good service

Happy - 05/02/2018
Reviewer: Terry Smith
They came quickly and work great, they were replacements for old ones.

Great product - 04/17/2018
Reviewer: Stella McMichael
Dealing with this company was easy with fast delivery....Product was easy to install and true product description.

- 04/16/2018
Reviewer: Devin Reed
Great product. Thank you!

Happy customer - 04/03/2018
Reviewer: gerson shapiro
excellent product--great service. Thank you....

Smoke alarm - 04/03/2018
Reviewer: stephen mustacchio
Easy to install.

- 04/03/2018
Reviewer: 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.

- 04/03/2018
Reviewer: Robert Toth
Price at First Alert was lower than hardware stores....easy to install...quick delivery....would highly recommend...

Smoke Alarm - 03/27/2018
Reviewer: Evan Hammer
Product works well. Never had any issues with them. The item was received faster than they estimated.

Easy Peasy - 03/20/2018
Reviewer: Sally Spencer
The units were easy to install. They are neat looking and work well.

Wired Smoke Alarm - 03/19/2018
Reviewer: John La Duke
Clear instruction. Easy install. Great price

Service Dept. A#1 ! - 02/26/2018
Reviewer: Richard Smith
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

Excellent! - 02/22/2018
Reviewer: Geoff Burrows
Great design, clear instructions, easy install!

First Alert alarm - 02/21/2018
Reviewer: Keith Kitchens
Just the product I needed. Needed to replace a broken unit. Replacement was quick and simple.

- 02/14/2018
Reviewer: Vetta Nelson
Great product

Great - 02/12/2018
Reviewer: Richard Meister
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.

- 02/08/2018
Reviewer: 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.

New smoke detector - 02/06/2018
Reviewer: Paul Nunemann
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.

Very satisfied - 02/06/2018
Reviewer: David Hall
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.

- 02/02/2018
Reviewer: James Clark
I purchased this as a replacement to an original alarm which was damaged. It performs very well with no problems at all.

Smoke alarm - 01/30/2018
Reviewer: Robin Amadea
I needed to replace my old smoke detectors. The replacements were easy to install and it was great knowing we are all safe again.

Smoke Alarm replacement - 01/29/2018
Reviewer: Harold Barras
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.

Perfect replacement - 01/25/2018
Reviewer: Ed Daniels
Ordered one to replace the same unit in the hardwired system. A perfect fit. Two minute install.

- 01/25/2018
Reviewer: Kelli Cobb
Easily changed old detector with new one. Just snaps right in.

- 01/24/2018
Reviewer: Craig Thomson
Pleasantly surprised that batteries were included

10 yr Replacement --- models still exist - 01/23/2018
Reviewer: Carol Weber
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...

easy to install - 01/22/2018
Reviewer: Heather Mabry
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.

- 01/22/2018
Reviewer: Cassie
Awesome price and fast shipping. Thank you so much!

seems great - 01/22/2018
Reviewer: Tim Meyer
reasonable price, easy installation where I was replacing older ones,came with batteries, prompt shipping, very satisfied

First Alert Hardwired Smoke Alarm with Battery Backup, 9120B - 01/20/2018
Reviewer: Kamal Khoury
Great product, easy to replace comes with battery, free shipping. Now our new smoke alarm operates as it should, we are covered.

Thank you. - 01/18/2018
Reviewer: Hal Barcey
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.

Smoke Alarms! - 01/17/2018
Reviewer: Rachel Mashburn
Smoke alarms are great and service was excellent. Received the order promptly. Thank you!

lanny kasner - 01/17/2018
Reviewer: Lanny Kasner
the hardwired smoke alarm that I ordered was easy to install, came in a timely fashion

- 01/17/2018
Reviewer: Leslie Soldani
Very good

- 01/17/2018
Reviewer: Kathi Hamilton
Perfect product, perfect quick service. Thank you.

- 01/10/2018
Reviewer: Phoebe Dedonis
Works well. Installed with hard wired system. Arrived on schedule, well packaged & best price.

- 01/03/2018
Reviewer: Patrick S Amello Sr
the best thank you! the lady that took my order was the best!

- 12/29/2017
Reviewer: Robert Levine
Installed when received. Took the place of another of the same. 5 min to reinstall. Works fine

- 12/28/2017
Reviewer: Les Soldani
Thanks for quick delivery!!

Just what I needed - 12/27/2017
Reviewer: Kenneth Monday
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!

PERFECT - 12/25/2017
Reviewer: JAMES SCHOFFSTALL
Easy to install and works perfectly on both AC & BATTERY

Built to last - 12/05/2017
Reviewer: Steve Meidlinger
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.

- 12/04/2017
Reviewer: Jerry McClellan
The price was way below the other options. Service and shipment were quick, and it works great!

- 11/30/2017
Reviewer: Laurie Hirsh
Very happy. Works well and we feel safe

Great Smoke Detector - 11/15/2017
Reviewer: Susan Garrity
Great product, easy to install, clean, sleek look.

Easy Installation! - 10/31/2017
Reviewer: Kenneth Chadee
Replacement units fit easily into the old base. Installation was very quick and easy to handle for an old guy.

Easy to install - 10/30/2017
Reviewer: Raymond Dunleavy
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

Great Product - 10/30/2017
Reviewer: Dale Streufert
Works great, easy installation for a 10 year old replacement.

Smoke Alarm/Battery - 10/26/2017
Reviewer: Lewis Mello
Unit functions perfectly

- 10/26/2017
Reviewer: John Raaen
Fabulous

3 hardwired/battery backup - 10/24/2017
Reviewer: Charles Stauffer
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.

- 10/19/2017
Reviewer: donnie beach
Fast shipping/item as described/easy to install/great value

Easy to order and get - 10/11/2017
Reviewer: Michael Garren
Easy to order and get. Delivered ahead of schedule. Great value, exactly what I wanted

Perfect Fit - 10/02/2017
Reviewer: Jim Dobbins
This retrofit hardwired smoke alarm fit perfectly in the existing box although I did have to replace the mounting base. 9volt battery backup also.

- 09/30/2017
Reviewer: Emily Tew
Easy to install

Smoke Detector - 09/19/2017
Reviewer: Asher Bronfeld
Works well- no problems so far

- 09/10/2017
Reviewer: Fred Himburg
I guess Harvey made the delivery longer than normal. But the product arrived just fine.

good deal - 09/09/2017
Reviewer: DAVID JAY
Delivered as promised

Rest Easy - 08/28/2017
Reviewer: James Kuntzelman
Glad to have been able to replace existing 11 year old hard worded alarms. No more false alarms or midnight beeps.

Quick Delivery - 08/10/2017
Reviewer: Allen Masuda
The alarm arrived in two days. I quickly installed it and went into other things.

Great product - 08/08/2017
Reviewer: Kim
It was just what I was looking for at a great price! I couldn't be happier with the product and service!

Fire Alarm hardware - 07/17/2017
Reviewer: Alvin Brewton
Replacement unit for original equipment in home. Solved system problems and operating like a new system

smoke alarms - 06/14/2017
Reviewer: Theodore Koch
Interchanged with ones we had 10 years ago so easy to replace the old ones.

- 06/13/2017
Reviewer: 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.

Great service - 05/22/2017
Reviewer: Terry Patti
Technical person Tiffany provided proper information to replace model that no longer existed. Sales dept. shipped product quickly and at a very reasonable rate.

- 05/08/2017
Reviewer: David Syling
Easy installation. I replaced a bad unit with a new one. Works great

Awsome Product - 05/05/2017
Reviewer: Byron Rieckman
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

Great product, great service - 04/28/2017
Reviewer: J COLLINS MEEK
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

Quality and simple installation - 04/24/2017
Reviewer: Don Weiss
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!

- 04/17/2017
Reviewer: Mark Schneider
Fair Price easy to match P/N with existing smoke alarms and reasonable shipping time

- 04/03/2017
Reviewer: Jovito Tabares
compatible with existing wiring.

Pleased with product and service - 03/14/2017
Reviewer: Kurt Eddy
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.

Review of 9120B Alarm - 02/21/2017
Reviewer: RET CW4 Owen McDaniel
The item was the exact replacement as need. Worked properly and easy to install.

Smoke Detector - 01/27/2017
Reviewer: BR
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.

- 01/26/2017
Reviewer: William Sydnes
Good price - very easy to install and works great. I installed a LONG life battery Vs the one which came with it.

Wired smoke alarm - 01/06/2017
Reviewer: Michele Chapman
This was a replacement. Easy installation. Works great.

9120B Smoke Alarms - 01/05/2017
Reviewer: Mark Toussaint
Arrived quickly, easy install, all 7 work great

protected again - 01/04/2017
Reviewer: douglas wiseman
Replaced 6 hard wired smoke alarms-product as described. Easy replacement. Good price and quick delivery.

- 12/20/2016
Reviewer: thomas cychosz
Order was filled and delivered quikly

- 12/16/2016
Reviewer: Michael COFFEY
Unit replaced smoke alarms which were older than 10 years. They are hardwired into the electrical system. Test as good.

- 11/14/2016
Reviewer: Francine Finn
Received quickly. Fit as technician indicated. Would use company again.

- 11/10/2016
Reviewer: 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.

- 11/08/2016
Reviewer: 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.

Easy to replace - 11/08/2016
Reviewer: Barbara Schoeff
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!

- 11/01/2016
Reviewer: Alfredo Delos Santos
The product was as advertised and worked nicely all six of them.

- 08/29/2016
Reviewer: Joseph Bergwerk
Installed it today-No problem-works fine

- 08/29/2016
Reviewer: Paul Janssen
Very pleased with the delivery time. Everything I needed was included. Fast and easy installation.

Quick Service - 08/28/2016
Reviewer: John Ames
Quick Service Easier then searching at home improvement stores for exact model.

- 07/13/2016
Reviewer: Andrew Sanfelippo
I've installed the alarms and so far no problems.

- 07/07/2016
Reviewer: 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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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

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