The First Alert CO605 plug-in carbon monoxide alarm with battery backup uses an electrochemical carbon monoxide sensor-the most accurate technology available. The alarm easily plugs into any standard outlet with no additional mounting. Battery backup ensures alarm works even during power outages. Mute button silences any nuisance alarms. Single button also tests alarm functions. Carbon monoxide alarm utilizes electrochemical sensor for increased accuracy. 7-year limited warranty. CO alarm meets UL standards.
120-volt AC plug-in carbon monoxide alarm
Mute button, mutes unnecessary alarms, also tests alarm function with same button
EZ access battery door, front-open compartment allows easy battery change without dismounting alarm
9V battery included
7-year limited warranty, carbon monoxide alarms should be replaced every 5 years for maximum protection