Product Info Catalog Plumbing Water Heaters Water Heater Accessories Natural Gas Detector Natural Gas Detector Request a Quote UPC: 681035017364 SKU: 224842 Model Number: PNG1 Detects Natural Gas, Compressed Natural Gas, ch4, Methane, Propane, Butane, Liquid Natural Gas (LNG), Liquid Petroleum Gas (LPG), To Locate Leaks In Pipes, Valves, Fittings. Audible And Visible Annunciation and Catalytic Combustion Sensor. Detects LNG, LPG, CH4, Methane, Butane, Flammable Gas Sensitivity: LPG: 2000 PPM, LNG 4000 PPM Catalytic Combustion Sensors Ideal for Contractors and Homeowners to Check Gas Leaks in Plumbing & Appliances