BRK Hardwired Interconnected Smoke and CO Alarm with Battery Backup-SC9120B at The Home Depot
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Model # SC9120B

Internet # 202433890

Hardwired Interconnected Smoke and CO Alarm with Battery Backup

BRK Hardwired Interconnected Smoke and CO Alarm with Battery Backup

This item has been discontinued.
The Home Depot no longer carries this specific product.

$47.97 / each
Item cannot be shipped to the following state(s): GU,PR,VI


In Stock



Model # SC9120B

Internet # 202433890

The BRK Hardwire Interconnectable 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

Info & Guides

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Alarm Sensor Type  Ionization  Alarm Type  Carbon Monoxide 
Alarm/Detector Features  Battery Back-Up  Assembled Depth (in.)  5 in 
Assembled Height (in.)  1.97 in  Assembled Width (in.)  5 in 
Battery Back-Up  Yes  Certifications and Listings  1-UL Listed 
Commercial / Residential  Commercial / Residential  Connector/Contact Type  2-Wire 
Electrical Product Type  Carbon Monoxide Detector  Included  Batteries 
Returnable  90-Day  Voltage (volts)  120 



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