Kidde Worry-Free, 10 Year, Living Area Smoke Alarm, Photoelectric Smoke Alarm Contains A Sealed In Lithium Power Supply, No Battery Replacement Required Over The 10 Year Life Of The Alarm, Advanced Photoelectric Sensor Detects Particles Associated With Slow Smoldering Fires, Alarm Automatically Activates When Attached To The Mounting Bracket, Test/Hush Button, End Of Life Warning & End Of Life Hush Features Included, UL Listed, 10 Year Warranty, Clam Shell.
