CR's testers say these models from First Alert and Kidde are great at protecting you and your loved ones from harmCR's ...

The first is a smart smoke alarm while the second combines smoke and carbon monoxide monitoring. Both are hardwired with backup power via ... notifications and low battery notifications.

This typically solves the problem for alarms that run entirely on batteries and for those that are hardwired with a battery backup. Sometimes, however, the smoke detector continues making the same ...

The Expert: Shawn Mahoney P.E. is an Engineer in the Technical Services Division at the National Fire Protection Association (NFPA). He is a registered professional engineer with a B.S. in ...

Bearing both the Kidde and Ring brands, the new Smoke ... alarms on the same circuit will also sound off. In the event of a power outage, the devices will fall back to a pair of AA backup batteries.

Stay prepared with the most reliable smoke detectors for fire and carbon monoxide detection -- tested and recommended by our ...

Smoke detectors can protect your home and family in the event of an emergency. Here are CNET's expert recommendations. Laboratory Technical Project Manager Gianmarco Chumbe has been part of the ...