In a large city, one air quality monitoring station is not enough. So usually in a city to set up several air monitoring points. And according to the actual situation of the site, the installation of normal size air quality monitoring station equipment or miniature air quality monitoring station equipment. Such monitoring stations need to have automatic detection and automatic recording functions. This allows stable operation for a long time after installation. And the staff just need to go to the monitoring station at intervals to retrieve the test results, can get relevant air data.