G7 MIPI fresh air system intelligent controller can monitor indoor temperature and humidity, PM2.5, CO2 , VOC and other data in real time; can be connected to WIFI (optional); with ModBus RTU (RS485) interface. Users can connect to backends such as smart homes through the ModBus interface to monitor device status; the output signal of the AC 3-speed controller directly controls the start and speed of the fresh air fan. It can be widely used in residential, commercial and industrial occasions, and can effectively improve air quality to create a healthy, comfortable, efficient, environment-friendly and energy-saving living and working environment.