MR-A(S) ambient air quality monitor (automatic station) is a comprehensive station for monitoring air quality in the environment. It contains high-precision dynamic gas distribution instrument, air quality monitor, zero air generator and other instruments, which can realize The calibration function is an ambient air quality monitor that complies with the Class C method of the "Air and Exhaust Gas Monitoring and Analysis Methods" promulgated by the State Environmental Protection Administration. It can simultaneously monitor at least four measured gas and particle concentrations required by the environmental protection department. Monitoring ambient gases include : SO2, NO2, CO, O3, particulate matter concentration includes: PM2.5, PM10. It can be expanded to monitor more than thirty kinds of gases such as VOC, H2S, NOX, CH4, HCl, HF, Cl2, NH3, CO2, etc.; dust particles TSP; meteorological parameters: temperature, humidity, atmospheric pressure, wind speed, wind direction, illumination, ultraviolet radiation, Solar radiation, noise, negative oxygen ions, etc. Adopt self-created core algorithm to achieve resolution of 1ppb.