0029054007100

BRK

Model 3120B

Internet #203524005

120-Volt Hardwire Smoke Alarm with Battery Backup Dual Photoelectric and Ionization

$29.97 /each
  • Utilizes both ionization and photoelectric smoke sensors
  • Two Latching Features - Alarm Latch and Low Battery Latch
  • Hardwired with battery backup

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Product Overview

The BRK Smoke Alarm detects flaming and smoldering fires and runs on a battery backup when your power is out. Your Alarm will sound if it detects smoke even during power outages. This alarm is made for hardwire installation and uses (2) AA backup batteries. It has an ionization sensor to detect fast flaming fires and a photoelectric sensor to detect smoldering fires. Engineered for residential and institutional use, this detector is perfect for hospitals, hotel rooms and dormitories. Use this detector in multi-family dwellings as defined in standard NFPA101. The 3120B is rated for 120-Volt, 60-hertz and has a standard white finish. It measures 5.25 in. by 5.25 in. by 2.50 in. and weighs 0.5 lbs. BRK's Smoke Alarm is warranted to the original purchaser for a period of 10 years. BRK invests time and research into providing dependable and hardworking products. Committed to innovation and value, First alert improves safety in and around the house.

  • Detects flaming and smoldering fires
  • Features an ionization and photoelectric sensor
  • Made for residential and institutional use as defined by standard NFPA101
  • Rated for 120-Volt, 60 Hz and has a standard white finish
  • Runs during power outages with (2) AA backup batteries
  • Measures 5.25 in. by 5.25 in. by 2.50 in.
  • Includes batteries

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Customer Questions & Answers

120-Volt Hardwire Smoke Alarm with Battery Backup Dual Photoelectric and Ionization
120-Volt Hardwire Smoke Alarm with Battery Backup Dual Photoelectric and Ionization

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2 answers

can you get a veterans discount when ordering this online?

This question is from 120-Volt Hardwire Smoke Alarm with Battery Backup Dual Photoelectric and Ionization
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August 14, 2015
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Asked by
Gilbert, AZ
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January 7, 2016
Answer: 
You could have it shipped to the store and the returns counter will adjust the price for you.
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August 18, 2015
Answer: 
Thank you for your recent inquiry with The Home Depot. The Home Depot Military discount is only available for in-store purchases and does not apply to online transactions. For additional information about the Military Discount please contact your local Home Depot store. For any other questions, please call us at HomeDepot.com Customer Service 800-430-3376 (merchandise) or 1-800-455-3869 (appliances). Read More
Thank you for your recent inquiry with The Home Depot. The Home Depot Military discount is only available for in-store purchases and does not apply to online transactions. For additional information about the Military Discount please contact your local Home Depot store. For any other questions, please call us at HomeDepot.com Customer Service 800-430-3376 (merchandise) or 1-800-455-3869 (appliances). Thank you for shopping Home Depot. Read Less
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Is this basically the same thing as First Alert 3120B?

This question is from 120-Volt Hardwire Smoke Alarm with Battery Backup Dual Photoelectric and Ionization
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Gainesville, FL
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May 6, 2016
Which is dual and also has wire/ battery?
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I currently have FireX 3-wire units. Is there a problem connecting this 4-wire First Alert unit? Please provide a diagram.

This question is from 120-Volt Hardwire Smoke Alarm with Battery Backup Dual Photoelectric and Ionization
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Richmond
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April 23, 2016
Replacing all 7 smoke detectors that are 13 years old.
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WILL THE BRK 3120B REPLACE THE FIREX ADC MODEL?

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rogers city,mi
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September 7, 2015
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Customer Reviews

Rated 4.4 out of 5 by 15 reviewers.
Rated 5.0 out of 5.0 by A newer technology well worth it It's difficult to rate a smoke detector's effectiveness until we have a fire, so I'll update if able. It was an easy install, with the ability to change 2 AAs without removing from wall. No false alarms, so- far-so good. August 2, 2016
Rated 5.0 out of 5.0 by Very important item to have. Looks good, easy to install, and works great! Will buy another one when needed. August 9, 2016
Rated 4.0 out of 5.0 by Smoke alarms Arrived in a timely manner. Price was competitive. All looks okay. But won't be installed for awhile. And may never know how well they work. May 3, 2016
Rated 5.0 out of 5.0 by BRK/First Alert Photo and Ion Smoke Alarm Very easy to install. Only catch, as it were, is the battery tray will not close unless you've got batteries in it. Actually, you can jimmy it closed without batteries in it. Just don't pull out the battery tray, and then think it's broken, when it won't close. Put batteries in it. If you're installing it near the ceiling, rotate the detector's orientation to make sure you have room to open the battery tray, as it pulls out from the side. This was installed as a stand alone detector, so I didn't try to tie it to other detectors. I did not utilize any of the locking/anti-tampering features either. The green light showing the detector has power is very faint. Nice change from the green spotlights in my other detectors. Wire nuts are not included. Appears to be a well made product. February 10, 2016
Rated 5.0 out of 5.0 by replaced 10 year old smoke detectors The Fire Department here recommended that smoke detectors should be replaced after about 10 years. Installation was easy with better mountings and with improvements in software and hardware they should be a great improvement. December 9, 2015
Rated 3.0 out of 5.0 by Didn't wind up using Although I had read this type of smoke detector was the only kind effective at detecting both smoke and heat, as in smoldering fire, I discovered it would be twice as expensive to install since an electrician would have to do some re-wiring. Also wound up needing 8 detectors in order to comply with our city code, so decided to just go with the less expensive detectors with 10 year batteries. Otherwise, am sure this is a fine product. August 25, 2015
Rated 5.0 out of 5.0 by Simple replacement Replaced 12 year old smoke alarms with the same kind. Like the dual detector, AC/DC powered, and linked alarms (if one goes off they all alarm with a slight delay). Giving average quality because I haven't had them long enough to make a determination. Construction seems resonably good. 12 year old connetion fit the new ones perfect. Would have like to have the same with a 10 year battery for the lofted area of my house because replacing a battery even twice a year is a real pain. July 28, 2015
Rated 5.0 out of 5.0 by Very pleased with purchase and price. Great pricing on a valuable item. Not installed yet but researched extensively. September 22, 2015
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