The Kidde COB carbon monoxide alarm monitors CO levels in your home and sounds a loud 85 dB alarm when dangerous carbon monoxide is detected. It runs on two AA batteries (included), so it keeps working during a power outage.

• Model: COB (21033768)
• Power: 2 AA batteries, included
• 85 dB alarm
• LED status indicators show power, alarm and unit health
• Test/Hush button for system checks and temporarily silencing the alarm
• Mounts on a wall or sits on a tabletop
• Tested to UL 2034 5th Edition; ETL Listed
• 10-year limited warranty