10 YEAR SEALED BATTERY SMOKE ALARM WITH HUSH™

No battery replacement required over the 10 year life of the alarm; ionization sensor protects against fast flaming fires; test/reset button tests unit's circuitry and resets alarm; LED flashes red indicator with 4 modes of operation; tamper resist feature; alarm memory; Smart Hush temporarily silences nuisance alarms; End of Life warning alarm chirps every 30-45 seconds. UL Listed & 10 Year Limited Warranty.