First Alert Interconnect Hardwired Smoke Alarm with 10-Year Battery Backup, 1 pk

First Alert's Precision Detection advanced sensing technology complies with the latest industry standards to reduce cooking nuisance alarms and provides early warning in the event of a home fire emergency 10-Year battery backup provides continuous protection during power outages Through early warning interconnect, when one alarm sounds, all compatible* alarms will sound Alarm indicator visually identifies the unit that initiated the alarm End-of-life warning lets you know when it's time to replace the hardwire detector Test/silence button for efficient testing to ensure alarm is working properly