Model # 3120B

Internet #203524005

BRK 120-Volt Hardwire Smoke Alarm with Battery Backup Dual Photoelectric and Ionization
0029054007100

BRK

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

  • Utilizes both ionization and photoelectric smoke sensors
  • Two Latching Features - Alarm Latch and Low Battery Latch
  • Hardwired with battery backup
$29.07 /each

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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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$29.07 /each
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Name Battery Operated Dual Sensor Photoelectric and Ionization Smoke Alarm 120-Volt Hardwire Smoke Alarm with Battery Backup Dual Photoelectric and Ionization Hardwired 120-Volt Inter-Connectable Dual Sensor Photoelectric and Ionization Smoke Alarm with Battery Backup RSA-200 Smart Fire and Smoke Alarm
Brand First Alert BRK FireX Roost
Ratings (68) (22) (80) (6)
Alarm Sensor Type Dual-Sensor Dual-Sensor Dual-Sensor Dual-Sensor
Alarm/Detector Features No Additional Features Battery Back-Up Battery Back-Up,Hush Feature,Interconnected Battery Back-Up,Wi-Fi Enabled
Power Source Battery Hardwired Hardwired Hardwired
Commercial / Residential Commercial / Residential Commercial / Residential Commercial / Residential Residential
Alarm Type Smoke Smoke Smoke Flame,Smoke
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Customer Questions & Answers

Is this basically the same thing as First Alert 3120B?

Which is dual and also has wire/ battery?
Asked by: fred
Yes the model number is mentioned in the Product Overview. "The 3120B is rated for 120-Volt, 60-hertz and has a standard white finish. "
Answered by: Homeowner
Date published: 2017-02-08

can you get a veterans discount when ordering this online?

Asked by: Butch
You could have it shipped to the store and the returns counter will adjust the price for you.
Answered by: Matt
Date published: 2016-01-08

I currently have FireX 3-wire units. Is there a problem connecting this 4-wire First Alert unit? Please provide a diagram.

Replacing all 7 smoke detectors that are 13 years old.
Asked by: Grandpax2

WILL THE BRK 3120B REPLACE THE FIREX ADC MODEL?

Asked by: Dick
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Customer Reviews

120-Volt Hardwire Smoke Alarm with Battery Backup Dual Photoelectric and Ionization is rated 4.6 out of 5 by 21.
Rated 5 out of 5 by from No big negative issues. As with all new experiences the first one was the hardest. Each one got e... No big negative issues. As with all new experiences the first one was the hardest. Each one got easier. The amount of pre-stripped wire for the 120 plug in was a little optimistic. I ended up taking off another 1/8" of insulation in order to get a good wrap. I was also surprised that the units do not lock in place, but they really don't need to. If there is one fault it's that the indicator light is extremely hard to see unless you are directly under it. It's small and dim. I suppose they were thinking of keeping the rooms dark at night. I was used to a much brighter light on the old smoke alarms. So far all 9 that I replaced are without any fault. I just hope they work when needed. Charles
Date published: 2017-02-07
Rated 5 out of 5 by from This smoke alarm has both test methods. That is the best method for safety. Home Depot also had t... This smoke alarm has both test methods. That is the best method for safety. Home Depot also had the best price for this product. It is the best product at the best price. I eventually purchased a total of 4.
Date published: 2017-03-28
Rated 5 out of 5 by from I like all of the features of this item. Plus it was recommended by Consumer Reports. The elect... I like all of the features of this item. Plus it was recommended by Consumer Reports. The electrician installed them to be on the safe side.
Date published: 2016-11-09
Rated 5 out of 5 by from Excellent product replaced 20 year old smoke detectors with this... Excellent product replaced 20 year old smoke detectors with this modern brand daisy changed 3 together. Easy installation.
Date published: 2017-03-24
Rated 5 out of 5 by from 5 Star Review Rating provided by a verified purchaser
Date published: 2017-04-20
Rated 5 out of 5 by from Dual sensor means ionization + photoelectirc You should disregard the other review and check other sites for product reviews. I did extensive research before deciding on this smoke alarm. It is clear that dual sensor means photoelectric and ionization sensors for smoke. This alarm will detect both flaming and smoldering fires and give you the best protection.
Date published: 2013-01-19
Rated 4 out of 5 by from First Alert/BRK needs to improve their Quality Assurance(QA) I purchased four of these. I am relatively sure these are a good product; however, as mentioned in other reviews, First Alert/BRK does have some QA issues. Specifically, one alarm was missing a battery and another was missing the wiring harness. As my house was previously wired an older model First Alert/BRK, the missing wiring harness was not an issue. Replacement was easy, just change the base, plug into existing harness, and test each alarm. Needless to say, wiring would have taken several more hours. With respect to appearance, on some, it is hard to see the green status light, unless you are at just the right angle or it is dark. At this time, approximately one month of ownership, we have had no false alarms.
Date published: 2013-03-27
Rated 5 out of 5 by from 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.
Date published: 2015-12-09
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