Combustible Gas Leak Detector Detects Acetone Alcohol Ammonia Benzene Butane Ethylene Oxide Gasoline Halon Hydrogen Sulfide Industrial Solvents Jet Fuel Lacquer Thinners Methane Naphtha Natural Gas Propane Refrigerants Toluene Measuring Range 50 ppm (Methane) Audio and Visual Tic Rate Indicator Features Fully Adjustable Thumbwheel Battery 9V Height 8 in Width 4 in Depth 1 1/2 in Includes Battery Detector Manual Manufacturers Warranty Length 1 yr