The First Alert tamper resistant lithium battery powered alarm is proven to last at least 10 years without needing to replace power source. 10-year lithium power cells and tamper resistant design meet code regulations where required. No need to change the battery for the life of the alarm. Mute feature silences nuisance alarms from cooking smoke or shower steam. Single button also tests alarm functions. 10-year limited warranty. Meets UL standards.
- 10-year lithium power cell lasts the life of the alarm
- Ionization smoke sensor
- Meets UL217 standard for smoke detectors
- Tamper proof alarms are needed to meet local codes for rental properties
- First Alert is America's most trusted brand in home safety