First Alert CO910 Carbon Monoxide Alarm, 3 V Duct Can be placed over door

Can be placed over door or mounted directly to wall

Nickel-metal hydride battery

Dimensions: 13"H x 20

A single captive roller limits side play for improved lateral stability

Size: 4 oz

First Alert CO910 Carbon Monoxide Alarm, 3 V Duct Can be placed over doorHighlights: Color: White Volts: 3 Power Type: Battery Powered Sensor Type: Electrochemical Detects Carbon Monoxide: Yes Test and or Reset Button: Yes Indoor and Outdoor: Indoor End of life signal Alarm status LED indicator Electrochemical carbon monoxide sensor Versatile mounting options tabletop or wall Sealed lithium battery eliminates costly battery replacements UL Listed Number in Package: 1 Packaging Type: Clamshell