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

CO alarm scoring is based on response time to lower and higher levels of CO, accuracy of digital display or voice message. Recommended models meet our high standards for performance, safety ...

With this option, up to 18 devices can be connected to create a wireless network ... and an 85-decibel alarm. Similar to our First Alert combination smoke and carbon monoxide alarm mentioned ...

The best smart smoke detectors ... monoxide alarm going off, and then alert you via the HomeKit app on your phone, tablet, or Apple Watch. Even better: If you have a security camera on HomeKit ...

The best smoke detector can provide an important first line of defense from fire. We recently put the top smoke detectors to the test. See which ones performed best.

CO alarm scoring is based on response time to lower and higher levels of CO, accuracy of digital display or voice message. CO alarm scoring is based on response time to lower and higher levels of ...