DETECTS SMOKE: Sounds a loud 85-decibel alarm when smoke is detected - 3 long beeps with red LED light flashing in time, repeating. NEVER-CHANGE 10-YEAR BATTERY: No low battery chirps or battery ...

“Most fire codes require hardwired alarms,” Cooksey says. “There is a move to a hardwired smoke alarm with a built-in 10-year battery that lasts the life of the alarm and doesn’t require ...