Plugs into any AC wall outlet via direct-plug or with its hide-a-way 6' power cord. Features: 120 VAC, Electrochemical sensor, Detects natural gas (methane), propane, & CO, Displays CO concentration in PPM, 85 dB at 10', 6 1/10"H x 3 13/16"W x 1 13/16"D, 8 oz, 5-year warranty, UL listed.