Alarm has EZ view backlit digital display - Easy viewing of danger levels, current, and peak co levels in your home. Illuminates only when in alarm or button is pressed * Battery powered carbon monoxide alarm - 2 AA batteries included * Remote control mute feature for this alarm - Point & click any remote control unit to quiet unwanted alarms (remote not included) * EZ access battery door for AA batteries front-open compartment allows easy battery change without dismounting alarm * Mute button - Mutes unnecessary alarms, also tests alarm functions with same button