If in doubt, call a pro. Installing hard hardwired smoke alarms or carbon monoxide detectors can be complicated. It's possible to be a DIY project for homeowners, but it does require basic ...

And can I connect a battery-operated unit in my garage to the wired detectors?

With such a system, when one detects smoke or carbon monoxide, all of them sound, whether the detectors are hardwired or wirelessly connected. How We Test Smoke and Carbon Monoxide Detectors Each ...

We expect this model to perform similarly to the tested Google Nest Protect although it may differ in price and features. On April 3, Nest Labs halted sales of the Nest Protect smoke and CO alarm ...