First Alert Dual-Power Carbon Monoxide Plug-in Alarm with Digital Display wellness battery life is based on

battery life is based on lab data with 40 events/day

Stereo headphone output for listening to music privately

Metal construction with carry case

Audible message alert

*Energy savings may vary based on actual usage and other factors

First Alert Dual-Power Carbon Monoxide Plug-in Alarm with Digital Display wellness battery life is based onThe First Alert CO615 Dual Power Carbon Monoxide Plug in Alarm alerts you to dangerous carbon monoxide levels. This 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 monitor also features a convenient test and silence button and an end of life timer that lets