Kidde Battery-operated Carbon Monoxide Alarm with Digital Display with three AA batteries included..Dimensions: 4.5" x 1.5" x 2.75"////battery-operated carbon monoxide alarm with digital display and three AA batteries.
Digital display shows CO level in PPM and updates 15 seconds. Peak level memory. Test/reset button. Low battery signal. Slide-out battery door cover. Battery safeguard.