The gas detector is used in the occasions where mobile fast detection and reading of various gas concentrations, temperature and humidity measurements on site, and alarms for exceeding the standard are required. The clear color screen is used to display the concentration in real time, and the electrochemical or infrared and catalytic combustion products that are the best in the current industry are selected. , thermal conductivity, PID photoion principle gas sensor, precision capacitive digital temperature and humidity sensor, simulation icon display menu function, pump suction measurement, built-in replaceable water vapor and dust filter, protection grade IP67, rain and short-circuit proof time to soak.