Model # SC9120B

Internet #202433890

BRK Hardwired Interconnected Smoke and CO Alarm with Battery Backup
0029054513069

BRK

Hardwired Interconnected Smoke and CO Alarm with Battery Backup

  • Uses ionization technology and an electrochemical sensor
  • Detects smoke and carbon monoxide
  • Hardwired with battery backup
$35.00 /each

Frequently Bought Together

Product Overview

The BRK Hardwire Interconnected Ionization Smoke and Carbon Monoxide Alarm detects two life-threatening hazards in 1 simple unit. This alarm uses visual and audible warnings when triggered and can easily be silenced during false alarms by pushing the test/silence button. A 9-Volt battery backup provides reliable operation, even in power outages, and the unit chirps when the battery is running low on power.

  • Combines a smoke and carbon monoxide detector in a single unit for comprehensive protection
  • Separate visual and audible warnings for smoke and carbon monoxide detection
  • Automatically performs internal test of functionality
  • Test/silence button ceases a non-threatening alarm or low-battery warning and allows you to test the unit's operation
  • 9-Volt battery backup for peace of mind during power outages
  • Battery door lock and mounting bracket lock for tamper resistance
  • Microprocessor controlled for fewer nuisance alarms
  • Low-battery warning chirp and missing battery tab alert you when unit requires a new power source
  • AC power indicator and alarm indicator light for easy identification of alerts
  • Quick plug-in power connector for easy installation
  • Interconnect with up to 18 other compatible smoke alarms and 6 compatible devices like bells, horns, repeaters and door closers (not included)
  • Latching alarm indicator remembers which unit initiated an alarm
  • 7-year limited warranty
  • America's most trusted brand in home safety

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Customer Questions & Answers

24 Questions51 Answers

Customer Questions & Answers

Hardwired Interconnected Smoke and CO Alarm with Battery Backup
Hardwired Interconnected Smoke and CO Alarm with Battery Backup

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7 answers

three short beeps

This question is from Hardwired Interconnected Smoke and CO Alarm with Battery Backup
Asked by
detroit
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July 24, 2015
what does three short beeps that happen infrequently mean? an model 7010B this has been happening since I installed it over a year ago.
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Answers (7)

Asked by
Cedar Park Tx
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Home Improvement Profile: DIYer
September 22, 2016
Answer: 
Just called First Alert, customer service was very good and they explained that the unit has a 7 year warranty cost for replacement is $6 shipping. You will need the unit in your hand when you call because the date is posted on the back of the unit.
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Asked by
Annapolis MD
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Home Improvement Profile: Professional
September 3, 2016
Answer: 
Battery is going dead.
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Asked by
West side store in EL Paso, TX.
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July 26, 2016
Answer: 
You can find out what that code means by untwisting your alarm unit and comparing to the numbers given on the back of the unit. If you have replaced the battery with a known good battery more then probable it is the radiation source within the unit--it is probably defective and will require replacement of that alarm unit.
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Asked by
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November 5, 2015
Answer: 
I had the same issue. Detector needed to be replaced. Call their customer service number at 1-800-323-9005 Monday - Friday: 7am to 7pm CST, Saturday & Sunday: 8am to 6pm CST.
My detector was 4 years old and they replaced it. I did have to pay $6 to cover shipping.
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Asked by
Austin, Texas
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October 20, 2015
Answer: 
could be smoke in the house...
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Asked by
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September 5, 2015
Answer: 
Malfunction. Replace Smoke Detector.
It states it on the back of it.
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Asked by
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July 26, 2015
Answer: 
I means it's defective and you need to replace.
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6 answers

Does this unit come with the plug to wire it in case it doesn't interconnect with the older model I'm replacing?

This question is from Hardwired Interconnected Smoke and CO Alarm with Battery Backup
Asked by
Plymouth MA
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March 21, 2016
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Answers (6)

Asked by
New Orleans, LA
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August 29, 2016
Answer: 
Yes, it does come with a wiring harness.
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Asked by
Norristown, PA
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August 29, 2016
Answer: 
Yes. But you need to go to www.brkelectronics.com to check for compatibility with older models.
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Asked by
Huntsville, AL
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August 9, 2016
Answer: 
It comes with wiring for interconnect, but it is not required in case your installation does not require it. There are wires for hot, common and interconnect and are clearly labeled in the instructions
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Asked by
West side store in EL Paso, TX.
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July 26, 2016
Answer: 
No.
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Asked by
West side store in EL Paso, TX.
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July 26, 2016
Answer: 
Yes, it is exactly like the original. Just follow the easy to follow installation instructions.
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May 20, 2016
Answer: 
RLH, thank you for your recent inquiry with The Home Depot. This smoke and CO detector has a battery back up and a Quick Plug-in connector. We appreciate your business and look forward to serving you in the future. Thank you for shopping Home Depot.
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5 answers

WHAT IS THE MODEL NO. OF THIS PRODUCT? (SMOKE AND CO DETECTOR)

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Asked by
WEST FAIRLEE, VT
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September 1, 2015
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Answers (5)

Asked by
durham NC
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September 13, 2016
Answer: 
SC9120B
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Asked by
Norristown, PA
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August 29, 2016
Answer: 
BRK Model SC9120B, First Alert Smoke and Carbon Monoxide Alarm
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Asked by
Haworth, NJ
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April 26, 2016
Answer: 
BRK First Alert SC9120B
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Asked by
Austin, Texas
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October 20, 2015
Answer: 
Model # SC9120B
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September 2, 2015
Answer: 
This is model number SC9120B.
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4 answers

Does the unit come with a battery or do I need to buy one separately?

This question is from Hardwired Interconnected Smoke and CO Alarm with Battery Backup
Asked by
Calgary, Alberta, Canada
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June 29, 2016
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Answers (4)

Asked by
New Orleans, LA
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August 29, 2016
Answer: 
Yes, it does come with a battery.
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Asked by
Huntsville, AL
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August 9, 2016
Answer: 
Yes, it comes with a battery.
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Asked by
Huntsville, AL
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August 9, 2016
Answer: 
It comes with one
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June 30, 2016
Answer: 
This item requires a battery to be purchased.
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Customer Reviews

Rated 4.3 out of 5 by 114 reviewers.
Rated 1.0 out of 5.0 by Shelf Life for SC9120B First Alert Combo Smoke and Carbon Monoxide Alarm Be aware and forewarned when purchasing this product of the manufacture date on the back of the alarm unit. Customer service at First Alert (800-323-9005) tells me that there is a shelf life of only 5 years on units manufactured before May 2011. We have apartment buildings and In January 2016, we purchased eight units from Home Depot for replacement on units that were starting to chirp. The units we purchased had a stamped manufacturing date of April 25, 2011. Here it is August 2016 and we are having to replace all the units we just recently replaced as all the new units started chirping and will not cease chirping even after replacing with new batteries, twice (thinking perhaps the batteries were defective). The batteries are fine. It is the units that are at the end of their shelf life so I am told by customer service at First Alert; and unless I can produce the receipt, First Alert customer service cannot/will not assist me. 2015 taxes were filed and receipts are with accountant. I feel that First Alert should have not only the manufacture date on the back, BUT, should also have the expiration date stamped alongside. Had we known these units have a shelf life/expiration dates, we would not be buying in bulk and replacing expired units with more expired (but new) units. I am also disappointed that the big box stores are selling expired merchandise that should be pulled off the shelves!!! August 16, 2016
Rated 1.0 out of 5.0 by Notsogud I forgot, my bad.... dont buy combo things that are better left separate. If you buy a Smoke and CO detector and the CO detector goes bad, you have to buy a new expensive combo unit even though only half went bad. October 23, 2016
Rated 5.0 out of 5.0 by Replacement part was a direct fit. Date of manufacture was within 3 weeks of shipment and installed battery was less than6 months old. Store service was done rapidly and with a smile. October 25, 2016
Rated 5.0 out of 5.0 by Smoke These were replacements for 2 that stopped working after 4 years. Wish they were less expensive. September 24, 2016
Rated 3.0 out of 5.0 by smoke Alarm I actually have not installed this product. Lacking confidence in my electrical knowledge, I tried to follow the installation instructions, but here is where the main problem is. The instruction sheet print was so small and the diagrams so unclear that I could not read it. I would suggest that less paper space be used to print the instructions in different languages and use the space for larger print and clearer diagrams, or use more paper. That is the reason why I have not installed the alarms. Thank you. August 29, 2016
Rated 5.0 out of 5.0 by Replaced same units My old units were ready to be replaced and we were happy with them and decided to use the same ones September 27, 2016
Rated 5.0 out of 5.0 by BRK Smoke & Carbon Monoxide Alarm Perfect Solution! I replaced two BRK Smoke Alarms with two BRK Smoke & Carbon Monoxide Alarms in our home. They were compatible with the existing multi-alarm system and matched perfectly in the ceiling. Great solution to adding carbon monoxide alarm capability to our home. The removal of the old smoke alarms and installation of the two new smoke & carbon monoxide alarms was "plug and play"! April 12, 2016
Rated 3.0 out of 5.0 by Replacement Smoke Alarms We had to replace our identical alarms with these because they are all wired together. Unfortunately, the old ones lasted only six years. The new ones have a 10 year warranty. Therefore save your receipts. Other than that they function well. September 1, 2016
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