First Alert Plug-In Carbon Monoxide Alarm with Battery Backup

The First Alert CO606 Carbon Monoxide Plug-In Alarm with battery backup features an electrochemical CO sensor to alert you to carbon monoxide. This carbon monoxide detector plugs into any standard electrical socket to monitor CO levels in your home. The simple, user-friendly design features battery backup to allow for continuous monitoring, even in the event of a power outage. Battery backup allows for continuous monitoring during power outages Single test/silence button for simple operation Loud 85-decibel alarm sounds when CO levels are elevated CO detector plugs into any standard electrical socket Plug-in CO detector alerts you to carbon monoxide