First Alert 1039734 Carbon Monoxide Plug-In Alarm with Battery Backup Summer10 Honeywell's classic Round design

Honeywell's classic Round design

Heat-Resistant filter system captures the finest dust and ash

Temper roof anchor easily installs with included screws on most roofs up to 12/12 pitch

This is the way Grandma used to do it

First Alert 1039734 Carbon Monoxide Plug-In Alarm with Battery Backup Summer10 Honeywell's classic Round designThe First Alert CO605 Carbon Monoxide Plug In Alarm features an electrochemical CO sensor to alert you to dangerous carbon monoxide. This personal carbon monoxide detector plugs into any standard electrical socket to monitor CO levels in your home, office, or other space. The simple, user friendly design features battery backup to allow for continuous monitoring, even in the event of a power outage. CO detector alerts you to carbon monoxide Plug &