First Alert CO400B Carbon Monoxide Detectors, White Eco_Friendly Ready to use right from

Ready to use right from the container

Application Temperature: + 40 degree F

Use with 1lb

With a 54" handle

First Alert CO400B Carbon Monoxide Detectors, White Eco_Friendly Ready to use right fromWorks during power outages. No installation required. Place or mount almost anywhere. Mute test button to quiet unnecessary alarms, test alarm function. 85 decibel alarm, low battery warning. Low battery mute quiets low battery signal for up to 8 hours. Front open compartment allows battery change without taking alarm down. Electrochemical sensor is the most accurate technology available for detecting carbon monoxide. End of life timer alarm chirps