Gift for Friends｜BRK CO5120BN Hard-Wired Carbon Monoxide Alarm｜ Other Products

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
 BRK CO5120BN Hard-Wired Carbon Monoxide Alarm User Manual
Brand:BRK ElectronicsSKU:6537Tags:Signaling & Notification, Smoke & Carbon MonoxideStyle:CO Alarm Without Strobe, CO Alarm With Strobe