First Alert SCO5RVA Battery-Operated Combination Carbon Monoxide and Smoke Alarm The Best with CO Detection If you’re looking for a smoke detector that can protect you against two threats, the ...

A carbon monoxide detector communicates through a series of R2-D2-like beeps and chirps to let you know when it detects dangerous levels of carbon monoxide, when the battery is low, and when the ...

See at Amazon First Alert CO400 If all you need is a carbon monoxide detector that can reliably watch your back without leaving a hole in your pocket, then the First Alert CO400 is perfect for the ...

You can also buy it in packs of one, two and three; perfect for placing in multiple locations. Kidde 5CO Battery Powered Carbon Monoxide Alarm 10 Year Life, £16.95 ...

They offer a portable carbon monoxide detector that is battery-powered and has more than 33,000 reviews averaging 4.7 stars. It’s available on Amazon, with a regular price of $28, and we found ...