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BRK

First Alert SC9120B Hardwire Combination Smoke/Carbon Monoxide Alarm with Battery Backup

4.4 out of 5 stars 962 customer reviews
| 59 answered questions

Price: $31.58 & FREE Shipping
In Stock.
Ships from and sold by ELECTRIC VOLTAGE.
1 Pack
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  • Service provided by a local pro
  • Estimate is for installation of 1 detector
  • Installing customer-supplied mounting plate
  • Running wiring to mounting location
  • Wiring alarm and attaching to mounting plate
  • Installing backup batteries as needed and testing device
How it works
  • Pro will contact you within 1 business day to schedule
  • Kick back and only pay when the job is done
  • Backed by Amazon's Happiness Guarantee
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  • Receive confirmation within 1 business day
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Estimate: $105.59
87% positive ratings (47 reviews)
    This fits your .
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  • plastic
  • Imported
  • Superior carbon monoxide sensor and dual ionization smoke alarm
  • Inter-connectable with BRK and First Alert hardwired smoke and carbon monoxide alarms
  • Easy to install universal mount bracket
  • Simple to use silence/test button; separate smoke and CO latching alarm indicators
  • 9-volt battery included; 7-year limited warranty
83 new from $26.75 1 used from $21.99

Frequently bought together

  • First Alert SC9120B Hardwire Combination Smoke/Carbon Monoxide Alarm with Battery Backup
  • +
  • BRK Brands 9120B Hardwired Smoke Alarm with Battery Backup, Single Individual from Contractor Pack
  • +
  • 9120b 4pack by BRK
Total price: $76.62
Buy the selected items together

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Size: 1 Pack
  • Buy Used and Save: Buy a Used "First Alert SC9120B Hardwire Combination Smoke/Car..." and save 76% off the $92.99 list price. Buy with confidence as the condition of this item and its timely delivery are guaranteed under the "Amazon A-to-z Guarantee". See all Used offers.

From the manufacturer

Product description

Size:1 Pack

Product Description

.Superior carbon monoxide sensor and dual ionization smoke alarm|Inter-connectable with BRK and First Alert hardwired smoke and carbon monoxide alarms|Easy to install universal mount bracket|Simple to use silence/test button; separate smoke and CO latching alarm indicators|9-volt battery included; 7-year limited warranty

Amazon.com

The BRK hardwire combination smoke and carbon monoxide alarm detects two hazards with one simple unit. Carbon monoxide (CO) is a colorless, odorless, deadly gas. It can be emitted by sources including gas or oil furnaces, gas clothes dryers, water heaters, fireplaces, wood stoves, charcoal grills, gas ranges, and space heaters. A clogged chimney, improper venting, and attached garages can also cause carbon monoxide accumulation. According to the Consumer Product Safety Commission (CPSC), at least one CO alarm should be installed near a home's sleeping area.

The BRK SC9120 hardwire combination smoke and CO alarm with battery backup includes these features:

  • Quick plug-in power connector for easy installation.
  • 120-volt AC inter-connectable (with maximum 18 compatible devices). The alarm can be interconnected with up to 12 other compatible smoke alarms and six compatible devices like bells, horns, repeaters and door closers. If one unit triggers an alarm, all smoke alarms in the series will sound. Power indicators show which unit in the series initiated the alarm.
  • Ionization sensor which is more effective at detecting flaming fires which consume combustible materials rapidly and spread quickly.
  • Microprocessor controlled for fewer nuisance alarms.
  • Single test/silence button which both silences a non-threatening alarm or low battery warning and allows you to test the unit's functionality.
  • Automatically performs internal test of functionality.
  • Latching alarm indicator which automatically identifies which unit initiated the alarm.
  • Separate smoke and carbon monoxide visual and audible warnings.
  • Battery drawer lock and mounting bracket lock for tamper resistance.
  • AC power indicator and alarm indicator light.
  • Low battery warning "chirp" and missing battery tab.
  • 9-volt battery backup for peace of mind during power outages.
All BRK Electronics carbon monoxide alarms are listed to UL Safety Standard 2034 for residential carbon monoxide alarms. Includes 9-volt backup battery. 5-year limited warranty.--Bree Norlander

What's in the Box
One combination smoke and CO alarm, one 9-volt battery, and user's manual


Product information

Size:1 Pack

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