How We Test Smoke and Carbon Monoxide Detectors Each smoke and carbon monoxide detector ... 10 years. First Alert owns the BRK-branded units and the Onelink line of wireless talking units.

CO alarm scoring is based on response time to lower and higher levels of CO, accuracy of digital display or voice message. Current Range of Tested Carbon Monoxide Detectors Current Range of Tested ...

This alarm runs on batteries and delivers warnings by voice. Note, though, that First Alert does not recommend installing a smoke alarm in a garage because of the risk of false alarms. But if you ...