FIRST ALERT CO605A Carbon Monoxide Alarm

First Alert® Plug-in electrochemical carbon monoxide alarm with mute button and battery backup. This plug-in electrochemical carbon monoxide alarm accurately alerts of increased CO levels in the home. The alarm easily plugs into any standard outlet with no additional mounting necessary. The Battery Backup feature ensures full protection even during power outages. An EZ Access battery door allows for battery changes without removing the alarm from the ceiling. A single button mutes false alarms and also tests alarm functions.