Backup power: Hardwired smoke detectors require a backup battery to power the unit in the event of a power outage. These will either use replaceable batteries or permanent 10-year batteries.

Beeping or chirping smoke detectors are beyond annoying. Usually, a chirp every 30 to 60 seconds just indicates a low battery ...

Winner: Hardwired with 10-year backup battery operation wins this round. The post Hardwired vs Battery Smoke Detector: Important Differences appeared first on Family Handyman.

What is the best smoke detector overall? A home without a smoke detector is a serious risk. Fires can ignite and spread before you even notice, making early detection critical. A smoke detector ...