First Alert Store - 120VAC Hardwired Smoke Alarm with Battery Backup, hardwired smoke detector, hard wired smoke alarm

120VAC Hardwired Smoke Alarm with Battery Backup

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First Alert Smoke Alarm SA9120BCN

AVAILABILITY: In Stock

Regular Price: $24.99

$14.99

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120VAC Hardwired Smoke Alarm with Battery Backup

120VAC hardwired alarm wires directly into your homes electrical system with battery backup and mute button. Battery backup ensures alarm works even during power outages. Mute feature silences nuisance alarms from cooking smoke or shower steam. Single button also tests alarm functions. Easy access battery drawer: no need to remove alarm from ceiling to change battery. Interconnects with up to 12 other First Alert� or BRK� hardwired alarms. 10-year limited warranty. Smoke alarm meets UL standards.

This smoke & fire alarm is for you if:
● You want alarms wired directly into your home's electrical system with the added safety of a battery backup.
● You want to easily mute unwanted alarms with the press of a button.

Where To Place Safety Smoke Alarms: One in every bedroom, and at least one on every level of the home.
First Alert Smoke Alarm SA9120BCN

120VAC Hardwired Smoke Alarm with Battery Backup Features:

● 120vac hardwired, easily replace existing or install new hardwired alarms into home's electrical.
● Battery backup, provides consistent protection for added safety during power outages.
● Mute button, mutes unnecessary alarms. also tests alarm functions with same button.
● EZ access battery drawer, no need to remove alarm from ceiling to change battery.
● Optional theft-prevention lock, when activated, batteries and/or alarm cannot be removed without proper tool.
● Ionization smoke sensor, optimal smoke detection from flaming fires.
● 9v battery included.
● Loud 85db alarm.
● 10-year limited warranty, smoke alarms should be replaced every 10 years for maximum protection.
● Meets UL217 standard.

Review this product

average customer rating based on 80 reviews

smoke detector - 05/09/2013
Reviewer: Paul Clinch
the smoke detector was exactly what I needed for my apartment building. it was delivered in record time.

- 05/06/2013
Reviewer: james raasch
The products arrived a head of schedule and function properly. Would use this product again.

vinny k - 04/09/2013
Reviewer: vincent kavanagh
good product

- 04/09/2013
Reviewer: gary buth
Works as advertised

Easy Install - 04/02/2013
Reviewer: Marvin Rea
These smoke detectors are easy to install and maintain. I just wish the packaging was as easy. I spent more energy getting the detector out of the double packaging then I did installing it. I wish First Alert would think more about our environment when they come up with packaging ideas. Why should I have to use scissors to break into a package? Its not like I can steal the detector through my cable modem!

Very pleased - 03/18/2013
Reviewer: Alicia Lapera
So happy with my recent purchase, I feel much safer knowing that I have a new somke alarm for each floor of my home. Service was amazing and shipping was very fast! The clearance price was an added bonus as well

- 03/08/2013
Reviewer: Victor W Hurst III
Well designed with test/mute button, very easy to mount with junction boxes already wired for this alarm battery backup easy to install and replace batteries. Thanks for such a good device.

- 03/07/2013
Reviewer: Joseph McMenimen
Easy to install very satisfied.

- 02/25/2013
Reviewer: Walter Grzyb
fast ship...easy to install...so far so good

- 02/25/2013
Reviewer: Roger Anderson
The unit was very easy to connect. Worked very well. I would not hesitate to purchase another when needed.

Larry Christy - 02/20/2013
Reviewer: Larry Christy
Installed three of these. No problems. Units are working fine. Installation very easy. I would recommend.

- 02/15/2013
Reviewer: Terry Troesch
Everything went just as planned. No problems on either end

Smoke detectors - 02/13/2013
Reviewer: Carmine Nobile
Never have had a problem with whatever Ive bought ast First Alert.

- 02/08/2013
Reviewer: Joseph DiNinno
excellent value

Easy does it! - 01/24/2013
Reviewer: Patrica Kelly
If you like clear eAsy directions,a good product and fast uncomplicated service, you have come to the right place. Replaced my missing smoke detector without driving 24 miles to find a store!

- 01/22/2013
Reviewer: Wayne Cooper
The smoke alarm is an excellent alarm and is simple to install. The service from First Alertservice was outstanding. I ordered my alarm on a Tuesday and it arrived on Friday. I will order any replacement alarms that I need from First Alert.

- 01/17/2013
Reviewer: james brickner
easy to do business, fast frieght. easy install.

Good product and company! easy DIY install! - 01/14/2013
Reviewer: james alto
Very easy install. I ordered 5 to replace smoke alarms that were 10-years old. Very good company and product reputation. These were in our previous house. price,delivery as advertised. instructions excellent. I have recommend this site to my co-workers and friends.

- 01/10/2013
Reviewer: Delbert Spinney
these replaced 13 year old first alert hard wired alarms. Only comment is that the old alarms had stickers inside the battery compartment to indicate + or - and the new alarms had no stickers nor any marking to indicate the +or-.

smoke alarm replacement - 12/31/2012
Reviewer: Anthony Kingsberry
I just recently replaced my old smoke alarm with the recently purchased model and so far so good. It was straight forward replacing the unit.

good product - 12/31/2012
Reviewer: walter doane
Ease of instalation and performance make thais a good product for my home

- 12/25/2012
Reviewer: Sterling Mortensen
Great service. Have ordered 2 more alarms with CO2/smoke detectors. Thanks for everything.

easy to install - 12/17/2012
Reviewer: Paul Thompson
Installs with no problem, just cut the AC power and install it in a few minutes. Battery backup is great, my old ones did not have that feature.

Another Great First Alert Product - 11/27/2012
Reviewer: Mark Malahosky
Very easy to install, high quality compared to previous builder model. Matches other battery operated First Alert detectors we have. Go with a name you trust.

- 11/27/2012
Reviewer: GEORGE RAPCIEWICZ
work great. easy to install

- 11/26/2012
Reviewer: Jim burdelski
It is a very good s OKeefe alarm and recommend it.

- 10/08/2012
Reviewer: Therese Griebel
Excellent product. Easy to install. Ordering online was very easy and efficient. Delivery was timely and the delivery instructions were followed. Thank you!

- 09/24/2012
Reviewer: Jim Banks
They were delivered ahead of schedule. Easy to install with easy to read instructions.

- 09/18/2012
Reviewer: Jerry Seal
Excellent product, easy installation, looks nice too!

- 07/23/2012
Reviewer: Rachael Wilks
These are awesome smoke dectors with a battery back-up which is great with all the power outages here and so easy to install..

- 07/17/2012
Reviewer: rhonda jones
after looking for replacement smoke alarms I decided to purchase this model as it is the improved version of my existing ones.I needed 7 so purchased the 6 pack and then this additional one.

- 07/01/2012
Reviewer: Carmine Nobile
Agreat place for all your needs.

Good Smoke alarm - 05/28/2012
Reviewer: Jennie Cooper
This is what i have always used and it always works good. Easy to install.

Good replacement - 05/05/2012
Reviewer: Marc Greenspan
I bought these to replace older detectors. They look nice and were easy to install.

It works - 04/08/2012
Reviewer: mark lewis
This is a replacement for alarms I already had. I was happy to see that the model hadnt changed so it would fit the old connections.

- 03/23/2012
Reviewer: ROBERT CAMPBELL
5 - Excellent! Prompt delivery and excellent product

- 02/01/2012
Reviewer: Donna Farmer
Phone rep was very courteous & informed me of the replacement for an outdated alarm. Once received, excellent quality. Very easy to install. Thanks.

- 01/24/2012
Reviewer: Dave Kimball
easy to order, pick up, and install. very happy

Fantastic Service - 01/23/2012
Reviewer: Thomas Heller
It is a great pleasure doing business with folks who are professional and prompt. Keep up the great service!!

- 01/17/2012
Reviewer: gerald simon
used first alert for many years have never had a problem with any of the units. great product.

- 01/17/2012
Reviewer: Paul Betz
very good. excellent response and delivery

- 01/17/2012
Reviewer: Bill FRANKLIN
I am very happy with the smoke alarms that I purchased. They were very easy to install. I would recommend them. thanks BILL FRANKLIN

Perfect Alarm - 01/04/2012
Reviewer: Randall Goldman
Extremely easy to install and did not know that all alarms shoul dbe replaced every 10 years. Replaced all in my house with these and very happy!

- 12/19/2011
Reviewer: david dener
easy to understand directions, simple to install and great protection!

2 of 8 did not meet warranty - 12/19/2011
Reviewer: Randy Haag
2 SA9120BCN of 8 smoke detectors installed in new house in 2005 did not meet 10 year warranty. customer service 800-323-9005 is a recording and did not speak to a person.

- 12/03/2011
Reviewer: jamie roy
works like a smoke detector should.

- 11/29/2011
Reviewer: Eric Larson
Looked in a number of stores for the unit I needed. Not finding it on the shelves I turned to the Internet to order. No hassle and instant response with shipping within a few days.

- 11/22/2011
Reviewer: ALLEN TUTINO
Easy process - exact order

First Alert Smoke alarms - 11/15/2011
Reviewer: Robert Mattsson
Great product. Changed out all in my house 4 in just over an hour. They came with everything needed including the pigtails and batteries. Fast regular shipping.

- 11/14/2011
Reviewer: Kerry Brinkerhoff
Excellent Alarm - easy to install - Actually seemed to be improved over the one I replaced.

- 11/03/2011
Reviewer: Susan Broucek
Arrived early - perfect for my application. Thank you!

- 11/02/2011
Reviewer: ALLEN TUTINO
Easy process to order and install

Easy Peace of Mind - 10/26/2011
Reviewer: Christine Haywood
Very easy to install in replacing our 10 year old units. Each one only took a couple minutes, and now we have peace of mind to have all new detectors!

Direct Replacement - 10/18/2011
Reviewer: Duane Jaeger
These were a direct replacement for my old smoke detectors. I had to replace a total of seven alarms. Each one took less then five minutes a piece. Very Easy!

- 10/17/2011
Reviewer: Carmine Nobile
Wonderful product, will always replace with First alert products.

- 10/12/2011
Reviewer: Carmine Nobile
best detectors on the market.

- 10/05/2011
Reviewer: Karen Eddy
Arrived on time with no problems. Worked with exixting alrms.

- 09/19/2011
Reviewer: Ed Rothacker
Customer Service was very helpful in recommending a replacement unit for my 5 outdated alarms. The new units installed easily using the existing hard-wired connectors. Glad to have some peace of mind!

recent order - 09/12/2011
Reviewer: David Stoops
Package arrived on time, in good shape and it took only a few minutes to install each of the two alarms.

- 09/08/2011
Reviewer: James Conklin
I got a great price, FAST delivery and easy installation. Very happy with the site and the product

Great Product - 09/07/2011
Reviewer: William Beedenbender
Easy to install,attractive design and alarm very effective!

One of seven... - 08/22/2011
Reviewer: Bob Murphy
The 9120B was a perfect match to six others in my home. Replacement was due to a spider embedding itself in the detector, causing unwanted alarm.

- 08/17/2011
Reviewer: Susan Kirkland
Now that I realized that the battery was put in backwards when you send it the smoke decector is working great. Thank you.

Frightening Experience - 08/11/2011
Reviewer: MJ
Chosen and installed 5 by our contractor according to City regulations in late 2010 when work was being completed on our house. Alarm went off in the early morning hours this morning 8/11. After calming our hearts realizing there was no smoke or fire, I concluded the power went off momentarily. Is this a problem with hard wired alarms, and can we expect to have the alarms sound each time the power goes off? Do the alarms need to be reset or do they reset themselves? I consulted the manual I found online, but it isnt clear. This is the reason for the 4 rating instead of 5. Thanks for any assistance.

1 - 08/09/2011
Reviewer: Wayne Spear
Great Product, as advertised and easy hookup

- 08/04/2011
Reviewer: Carmine Nobile
will not use any other detector.

- 08/03/2011
Reviewer: Suzanne Palmer
Received in record time. Very happy with product.

Excellent item - 07/30/2011
Reviewer: Bruce Blackburn
Items ordered are exactly as advertised and are shipped very quickly. Prices are competitive with local merchants.

Battery Placement - 07/26/2011
Reviewer: Livit
Installation of the First Alert smoke and fire alarm, model 9120B, was easy so I rate it 5. Finding directions on battery placement in the swing out battery compartment was IMPOSSIBLE because there werent any directions, so this part gets a 0! I hope the customer service division reads these reviews and contacts me so that I can rest assured I installed the batteries properly.

eAccess Response:
Someone will contact you shortly.

- 07/21/2011
Reviewer: Marlene Lijewski
We are very pleased with the new alarms, they were easy to install and very good sound, Thanks, Marlene

- 07/21/2011
Reviewer: Carmine Nobile
The best detector on the market.

- 07/20/2011
Reviewer: Jim Petersen
To date everything is as advertised. Am happy with the poduct.

- 07/15/2011
Reviewer: Amory Houghton
These were replacement units I purchased. Installlation very easy and now I rest easy with the new units in place. Glad you now indicate the safe life of the new hardwired units to be 10 years. Should enable a replacement to be installed before an existing unit malfunctions as it did before the new one was put in. amh

Good Price - 07/12/2011
Reviewer: Patricia Brand Fisher
Meets our local code at a good price

Best price available - 07/11/2011
Reviewer: John Black
I bought 2 of these at 40% off with free shipping. What a deal!

- 07/11/2011
Reviewer: Carmine Nobile
I use no other detector but First Alert.

- 07/06/2011
Reviewer: Carmine Nobile
Best replacement unit I have found.

Smoke detectors - 06/24/2011
Reviewer: Carmine Nobile
This model is the best replacement smoke detector I have been able to find and they fit perfectly.

Experience - 05/04/2009
Reviewer: Herb Wright
I currently have six First Alert smoke alarms in my house. All of them including this one work very well.

Hardwired - 03/05/2009
Reviewer: Tina M.
I have this smoke alarm throughout my home and they seem to work very well. Our contractor recommended them.

Read All Reviews

First Alert SA19120BCN Smoke Alarm Manual

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