First Alert Plug-In 120V Electrochemical Easy To Read Digital Display Carbon Monoxide Alarm Wrenches 3/8-Inch Shackle Diameter

3/8-Inch Shackle Diameter

Prevents water from freezing in temperatures as low as 10 f

in the form of blocks

contour-grip fits comfortably in hand

First Alert Plug-In 120V Electrochemical Easy To Read Digital Display Carbon Monoxide Alarm Wrenches 3/8-Inch Shackle DiameterElectrochemical sensor Easy to read backlit digital display allows a quick view of current and peak CO levels. Plugs into any wall outlet and includes a battery back up for detection even during power outages EZ access battery door allows you to change batteries without having to dismount the alarm 5 decibel horn sounds if carbon monoxide levels are too high, and a test silence button silences the alarm and allows you to test its functionality