Gas detection: LPG, natural gas and coal gas Power supply frequency: 50/60Hz Power supply: AC100V~AC240V Rated Load: &lt;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( -10C~ 50C) Storage temperature: -13 - 131(-25C ~ 55C) Relative humidity &lt;97 RH Detect Multiple Gases: Household gas detector suitable for detecting LPG (methane), natural gas, charcoal, gas gas, artificial gas, liquefied petroleum gas, liquefied natural gas, etc.< /p> Digital LED Display and Audible Warning: The gas detector offers voice notification and digital readout of gas concentration. When the gas leakage concentration reaches the preset level, the alarm provides visual and audible signal. 85dB alarm sound, reduce the risk of gas explosion and protect your family's life and property. Easy to install: The gas leak detector adopts an easy to install design, can be used by plugging it into the power socket directly to detect gas leaks. Widely used: This product can be used as an independent family alarm equipment, and can also be used as a detector alarm system front. Widely used for restaurants, hospitals, hotels, oil factories, garages, gas stations, etc. Precautions: System warm-up time is about 2-3 minutes. During this period, the gas test will not work. You must wait for the screen to show 0 (the system enters the working state) before it can be tested normally. The gas leak detector adopts an easy to install design, can be used by plugging it into the power outlet directly to detect gas leaks.