Kidde SMAC10YFEX Hard-Wired Firex Smoke Alarm, 10-Year Backup Battery

Hard-wired smoke alarm with 10-year sealed backup battery—no battery changes needed. Features interconnected activation so all alarms sound together, giving your family critical extra seconds to escape. Advanced dual-sensing technology detects fast-flaming fires while reducing false alarms from cooking. Self-testing design confirms reliable operation, and end-of-life notifications alert you after 10 years. Includes twist-and-click mounting bracket for straightforward installation. UL-tested for safety and reliability. 120V AC powered with 5" modern profile fits any room.