... in many fields, including natural gas corporation, petrochemical industry, coal mine, gas station, and so on, to monitor gases ... piping, environment of natural gas station, and concentration of coal mine gasSpecification Weight2kgValid detection distance1~34mGain key1~8m, pop-up8 ... 5%Respond time0.1sRange of operating temperature-10°C~40°CRange of storage temperature-20°C~60°CMaximum relative air ...