This meter is a combustible gases leakage detector, which is used to detect the leakage of combustible gases quickly and reliably. Convenient for users to safely detect and test a variety of combustible gases types, easyto meet different test needs. Two models are available, you can choose HT59 or HT60 according to your needs, HT59 without display, HT60 with LCD display. Widely used, suitable for water heating device detection, gases pipeline detection, etc. Features: Portable gases detector, compact body, quick response, detect leaks quickly. Using quality gases-sensitive semiconductor sensors, high-precise and more accurate measurement. Convenient for users to safely detect and test a variety of combustible gases types, easyto meet different test needs. Measurable gases types(partial list): acetone, Acetylene, alcohol, ammonia, benzene, butane, ethanol, oxirane, gasoline, hexane, hydrogen, methane, naphtha, natural gases, paint thinners, propane, solvents. Two-color backlight