Kidde Smoke Detector, Hardwired Smoke Alarm with Battery Backup, Front-Load Battery Door, Test-Silence Button, Pack of 4, White

• Front-load battery door – For quick battery replacements • Ionization sensing technology - hardwired smoke detector senses invisible fire particles, 85 decibel alarm alerts of fire • Whole home detection - easily install 1 fire detector on each level of your home & in each bedroom • Still works during power failures - smoke alarm with battery backup operates on a 120V power source with 9V battery included • Test/Hush Button – It’s simple to test or hush false alarms by pressing the button right on the face of the device • UL Certified, 10-year limited warranty • Package contains 4 Kidde smoke detectors