SMI110 10-Year Battery Smoke Alarm

10-Year Battery Smoke Alarm 10-Year Sealed Battery, for continuous protection. No battery replacements required for the life of the alarm. Eliminates low battery chirps. No low battery chirps for a decade. 10-year smoke sensor and end of life signal. Provides audible notice when the alarm needs to be replaced. Test/Silence Button, temporarily silence or test the alarm with one-touch, easy access button. 10 Year Limited Warranty