First Alert SA350B Smoke Alarm - Dual Ionization Sensor - Detects Flaming Fires - Battery Operated - Sealed Lithium Battery By BRK

Provides full 10-years of protection. Sealed tamper proof design eliminates removal of batteries for other uses and ensures operation over the life of the alarm. Meets Codes where 10 year sealed smoke alarms are required. . 10 year sealed lithium power cell prevents battery theft . Tamper proof design . Perfect mount allows for easy alignment of alarm . Single button test/silence . Meets California state fire marshal 's senate bill 745 requirement . 10-Years limited warranty.