First Alert 10-Year Sealed Battery Photoelectric/Ionization Smoke Alarm
- Photoelectric & ionization sensor
- Single test/silence button mutes unnecessary alarms and tests function
- End-of-life timer sounds when it's time to replace alarm
- Meets UL217 standards and complies with legislative requirements for 10-year battery-operated smoke alarms
- Includes mounting hardware
- 10-year limited warranty