First Alert CO615 Plug-In Carbon Monoxide Alarm with Battery Backup & Digital Display

The First Alert CO615 Dual-Power Carbon Monoxide Plug-In Alarm alerts you to dangerous carbon monoxide levels. This plug-in carbon monoxide detector operates on a dual-power system with battery backup for continuous monitoring, even in the event of a power outage. The backlit digital screen tells you at a glance what the carbon monoxide and power levels are. The CO detector also features a convenient test and silence button and an end-of-life warning that lets you know when it is time to replace the detector. Features:  Single test/silence button for simple operation Alarm plugs into any outlet and features a battery backup Backlit digital display shows at-a-glance readings for power and CO levels Dual-power carbon monoxide detector offers continuous monitoring of CO levels End-of-life warning signals when the CO detector needs replacing