The BRK CO5120BN is a hard-wired carbon monoxide combo alarm with battery backup. It features a CO sensor, Intelligent Sensing Technology™ for fewer unwanted alarms, an 85dB horn, 9V battery backup, side-load battery drawer, two silence features and is interconnectable with up to 18 devices.

Features

• 85dB horn alarm 
• T4 alarm sound pattern
• Latching alarm indicator remembers which unit initiated an alarm 
• Intelligent Sensing Technology reduces nuisance alarms
• Smart Interconnect is compatible with both BRK smoke and CO alarms 
• Two silence features can silence the low battery chirp up to 8 hours or temporarily silence an unwanted alarm 
• Quick, easy (hardwired) installation 
• Available with or without a strobe light

Specs

• Seven year limited warranty
• Weight: 2lbs

Documentation