Miniature Gas Leak Detector Detects Acetone Acetylene Benzene Butane Ethanol Ethylene Oxide Gasoline Hexane Hydrogen Industrial Solvents Iso-Butane Methane Methanol Paint Thinners Propane Natural Gas and Naptha Audible and Visual Indicator Features Auto Calibration UL Listed Intrinsically Safe Class 1 Division 1 Groups A B C D Battery (4) AA Includes Sensor Tip Batteries Fabric Case Instructions Manufacturers Warranty Length 1 yr.