Suitable for ceiling mounted fresh air, central air conditioning, dehumidifiers and other equipment, standard 86 box installation, intelligent control and management of equipment through 485 or relays, built-in high-precision sensors such as PM2.5, carbon dioxide (CO2), TVOC, temperature and humidity, built-in WFi module, 3.5-inch high brightness LCD display screen, can display monitoring data and equipment operation status in real time.