The GS30 is a low maintenance, easy-to-use portable combustible gas leak detector engineered to pinpoint leaks in residential, commercial and industrial appliances. Advanced semiconductor sensor and electronic control package enables detection of gases commonly found in service applications including; Carbon Monoxide, Natural Gas, Propane, Ammonia, Methane, Acetone, Hydrogen and Iso-Butane, with a virtually instantaneous alarm response period. Measuring just over 7" long and 0.72" in diameter its compact tubular shape enables testing in limited access areas and conveniently fits into a serviceman's pocket. Applications include the inspection of furnaces, valves, regulators, pipelines, meters and other devices associated with combustible gases.