Its loud alarm could be clearly heard from across the 2,700-square-foot house I ... it doesn't allow for this if the smoke is too heavy. The Nest is a hardwired unit, so installation was a bit ...

We spoke to a fire safety expert and weighed the pros and cons of cost, reliability and installation of hardwired smoke alarms versus battery-operated. Here’s everything you need to know.

If you buy through a BGR link, we may earn an affiliate commission, helping support our expert product labs. Smoke and carbon monoxide detectors have a simple but critical purpose. They have to ...