Bacharach Leakator 10 19-7051 Handheld Combustible Gas Detector is designed to detect combustible gases with a plethora of advanced features. The Bacharach Leakator 10 19-7051 features a bright LED indication scale of gas levels, audible indicator of any present gas, 30 hour battery run-time, an easy-to-use thumb-wheel control for sensitivity adjustments, and a 20" flexible probe to reach difficult areas.