Sealed Battery Carbon Monoxide Alarm, Lithium Battery, 4.5W x 2.75H x 1.5D
Keep your family safe without the hassle of battery-replacement and maintenance. The sealed-in battery keeps this carbon monoxide alarm functioning for ten years without the need for replacement. Easy to install alarm automatically activates when attached to the mounting bracket. Test/reset button tests unit for proper operation and resets carbon monoxide alarm.