... 2. efficient and effective. TH-2000 Ambient Air Quality Automatic Monitoring System is consist of a central station ... , PM2.5, CO, O3(optional)Meteorological instrument: measuring wind speed, wind direction, relative humidity, atmospheric pressure, (rainfall, radiation ... Absorption CO analyzer,TH-2009 Seperated Atmospheric weather automatic monitor, Integrative Meteorological 6 Data Monitor, TH- ...