Kidde Carbon Monoxide Alarm, 21010045

Worry Free 10 year sealed Carbon Monoxide Alarm features a sealed-in lithium power supply; no battery replacement required over the 10 year life of the alarm. Eliminates worry about battery removal or unauthorized deactivation of alarm. Alarm automatically activates when attached to the mounting bracket. Event memory feature flashed the Red LED every 60 seconds t alert that a high level of carbon monoxide has been detected within the last 14 days.