The Kidde Smart Smoke Alarm with Ring ($54.97) and the Kidde Smart Smoke and CO Alarm with Ring ($74.97) are hardwired alarms ...

The First Alert PRC710 uses a photoelectric sensor ... if the alarm goes off while you're not home. Backup power: Hardwired smoke detectors require a backup battery to power the unit in the ...

Beeping or chirping smoke detectors are beyond annoying. Usually, a chirp every 30 to 60 seconds just indicates a low battery. “If it has a 9-volt battery, it needs to be changed,” says Battalion ...

But you’ll need hardwired power infrastructure and a subscription to get the maximum benefit from these new home safety ...