Kidde i9070 Battery Operated 9V Ionization Smoke Alarm

Ionization sensor Easy to operate front load battery door Unique battery compartment will not close if battery is installed incorrectly Locking feature on the back allows the battery door to lock if theft or tampering is a concern Hush setting temporarily silences nuisance alarms Adjusting mounting bracket for fast installation Easy to use test/reset button Requires (1) 9V battery, included 10-year limited warranty