Portable combustible gas leak detector adopts ABS material, ergonomic design, easy to operate, using large screen dot matrix LCD display. The sensor uses the catalytic combustion type which is anti-interference capability, the detector is with a Long and flexible stainless goose neck detect probe and used to detect gas leak in the restricted space, when the gas concentration exceed a preset alarm level, it will make audible, vibration alarm. It is usually used in detecting gas leakage from the gas pipelines, gas valve, and other possible places, tunnel, municipal engineering, chemical industry, metallurgy, etc.