Q: About 10 years ago, I replaced the original wired smoke alarms in my home with wired dual sensors that use both ...

The Nest Protect comes in both wired and battery-powered versions ... Emergency Assist ($59/year), it can listen for smoke and CO2 detectors (as well as glass breaking), and alert you on your ...

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 ...

On April 3, Nest Labs halted sales of the Nest Protect smoke and CO alarm and deactivated the hush feature, called the Nest Wave, over concerns that the alarm could be unintentionally deactivated.

Inexpensive smoke detectors are not going to have the two sensors and likely will only have a seven-year battery. More: To request a smoke and CO2 detector If qualified people need a smoke and CO ...