First Alert CO400B Carbon Monoxide Detectors, White Strike Plates Either knob will retract latchbolt

Either knob will retract latchbolt anytime

Highly concentrated and low foam

This product can expose you to chemicals including Carbon Monoxide

Color: Warm White

125"H x 9" W x 3

First Alert CO400B Carbon Monoxide Detectors, White Strike Plates Either knob will retract latchboltWorks 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