Kidde Smoke Alarm, with Voice & Hush, Bedroom Use, (Photoelectric Sensor), 21010161

Worry Free 10 year sealed Bedroom photoelectric smoke alarm with Voice Alarm features a 10 year sealed in lithium battery that eliminates the need for battery replacement and ends worry over unauthorized battery removal. Self activated when mounted on bracket. Voice alarm announces "Fire! Fire! in addition to loud 85 decibel beeps when smoke or fire is detected. Alarm memory feature alerts user if the alarm has sounded since the last time the test/reset button was depressed. Smart Hush temporarily silences nuisance alarms for approx. 10 minutes and will not allow Hush Mode unless unit is in alarm mode.