Kidde 21009993 10-Year Lithium Ion Battery Operated Smoke Alarm, 3-Pack

3 pack of Code One brand 10 year sealed battery smoke alarm. These alarms feature an innovative design unlike any other smoke alarm. When attached to mounting bracket, the alarm will automatically activate. No switches, no pull-tabs, everything is automatic. This unique feature makes installing these 10 year, smoke alarms in your home, office, or business easy. In addition to the easy installation you also have the benefit of a sealed in lithium power supply, no battery replacement required over the 10-year life of the alarm. With this alarm installed in your home, office or business, you are providing an early warning in the event of a fire that can save lives.