Detect indoor temperature, CO2 concentration and PM2.5 concentration, and intelligently control the full-heat fresh air equipment based on the linked changes of the three data. Through the WIFI network module and the transport system, the mobile APP can provide users with air quality data and intelligent joint control, so they can check the air conditions in their home and adjust the operation of the machine at any time. Even if you are far away, you can take care of your family's respiratory health and avoid haze invasion caused by equipment shutdown.