This flammable gas detector is ideal for any flammable gas or vapor or residue situation to pinpoint known leaks, check for leaks and verify the safety of potentially hazardous locations.Features:Wide range of applications - This combustible gas sniffer can be used to detect gas lines and pipes; propane filling stations; ship bilge fuel; exhaust and fuel oil leaks, and to check the safety of manholes.12" Flexible Probe - The 12" long flexible gooseneck probe allows locating and detecting leaks in hard to reach and confined spaces.Portable Instant Response Detector - Battery powered handheld gas detector sniffer can be taken anywhere and used. Automatic and fast probe warm-up provides you with efficient testing with instant response.Adjustable Sensitivity - Increase the sensitivity dial to find small gas leaks. Reduce sensitivity to find larger explosive gas leaks while filtering out false alarms from background gas levels. 50 PPM (Methane) minimumAUDIO AND VISIBLE LEAK ALERTS -- Features 6 LED leak size indicators, plus speaker alarms notify users of gas leaks and relative concentrations of natural gas and propane.