BRK Electronics First Alert CO615B 120V AC/DC Plug-in with 2 AA Batteries Backup Electrochemical Carbon Monoxide (CO) Alarm with Digital Display

Plug-in carbon monoxide alarm with digital display and battery backup meets most state and local codes for carbon monoxide alarms. Electrochemical Carbon Monoxide Sensor - the most accurate sensor available as compared to other sensing technologies Single Button Test/Silence Battery Backup Two silence features - can silence the low-battery chirp for up to eight hours or temporarily silence an unwanted nuisance alarm Convenient Installation Options: unit plugs directly into the wall or can be mounted higher on the wall using the line cord Large backlit display - shows visual confirmation of CO levels in PPM Peak Level Recall Button - recalls the highest level of Carbon Monoxide detected Remote Controlled Test Silence: use any remote control to silence unwanted alarm or to test alarm End of Life Signal provides audible notification alarms needs to be replaced 7-Years Limited Warranty Model # CO615B W