1Portable Combustible Gas Detector Compact and lightweight this natural gas detector provides high to low sensitivity adjustments and audiovisual alarms enabling quick detection of combustible gas leaks in pipelines to ensure the safety of you and your family 2Home Gas Leakage Detection: Gas leak detector is specifically designed to detect gas leaks around your gas stove's center point. When the screen's base color is green, and there are no rising index grids, your home is safe. 3.Water Heater Gas Detection: Simply trace the detector along your water heater's gas pipeline. When the screen of handheld natural gas sniffer turns red, and the index grid rises along with a beeping alarm, it indicates a gas leak, ensuring your safety. 4.Gas Tank Leak Detection: Place the combustible gas leak tester on the switch port of your gas tank. If the base color turns red, the screen index grid ascends, and a beeping sound is emitted, this indicates a combustible gas leak. 5.Quick Pipeline Gas Leak Detection: The combustible gas detector is for rapid on-line pipeline gas leak detection. When the screen is green, with no rising index grids, it means your pipelines are secure. The alarm system is designed for your safety.