Name:Natural Gas Detector, Natural Gas Detector for Home Gas Alarm, Gas Leak Detector,High Sensitivity LPG LNG Coal Natural Gas Leak Detection, Alarm Monitor Sensor for Home KitchenProduct description:Features: Adopting high-quality semiconductor calefaction type sensor. MCU intelligent supervise control and SMT chip technology. Visual and audible alarm function. LED numeric display technology, display instant gas leak thickness. Three indicators: POWER, STATE, ALARM Specifications: Detecting gas: LPG, natural gas, and coal gas Power frequency: 50/60Hz Power supply: AC100VAC240V Rated load: <4W Alarm thickness: LPG: 0.1 0.5%; natural gas: 0.1 0.3%; coal gas 0.1 0.5% Alarm volume:85dB Working environment: 14℉ - 122℉( -10 C 50 C) relative humidity <97 RH Storage temperature: -13℉ - 131℉(-25 C 55 C)Package includes: 1 x Gas Detector 1 x English User Manual Natural Gas Leak Detector Is Sensitive And Accurate In Data Analysis. Avoid Possible Gas Poisoning, Fire, Explosion, Leakage and Other Hazards First, determine whether the gas to be detected is lighter or heavier than air gas that is heavier than air: liquefied petroleum gas, etc gas that is lighter than air: natural gas, artificial gas, biogas, etc. When detecting gas heavier than air: Install natural gas alarm detector 0.3 m above the ground, within 1.5 m from the air source radius When detecting gas lighter than air: Install natural gas alarm detector 0.3-1.0 m below the ceiling and within 1.5 m from the air source radius.