Combustible Gas Detector, Detects Natural Gas, Methane, Propane, Butane, Cyclopentane, Ethane, Ethanol, Isobutane And Ammonia, Accuracy 5 Ppm Methane, Audible Noise And Multiple Leds Indicator, Battery 2 Duracell Mn1300 D Alkaline, Height 26 In., Width 3 In., Depth 3 In., Includes Hydrocarbon Gas Sensor, 2 D-Size Batteries And Plastic Carrying Case