The Nest Protect has long stood at the top of our list of the best smart smoke detectors, but its reign is at an end. Google today announced that it's ending sales of the venerable product, and ...

The First Alert Smart, two-in-one alarm is compatible with the Nest Protect Smart Smoke & CO Alarm, and existing Nest users can add a First Alert Smart Smoke & CO Alarm in the Google Home app to ...

First Alert SA3210 - See at Amazon Best interconnected: X-Sense Wireless Interconnected - See at Amazon Best smart: Nest Protect - See at Amazon Best for heavy sleepers or hearing loss ...

The original Nest Protect combination smoke and carbon monoxide alarm aims to make that alarm in your house "less annoying." Consumer Reports tested it in February 2014.