Technical Specifications:

Operating Modes: Automatic, Manual, Timer
Fan Speed Modes: High, Medium, Low, and Automatic Fan Speed
Weekly Timer Settings: Different fan speeds
Timer On/Off
Communication: RS485, TUYA WIFI Mobile App Control
Local Temperature and Humidity Readings
Air Quality Monitoring: CO2, PM2.5 Sensor Control
Energy-Saving Mode: Screen Brightness Adjustment, Energy-Saving Mode
Temperature Range: 0～99°C
Humidity Range: 5～90% RH
CO2 Range: 0～5000 PPM
PM2.5 Range: 0～999 μg/m³
Power: Control Power: ≤200W, Rated Power: <2W
Output Connection: 3-Speed Fan 0-10V 
Voltage: 95～240VAC
Protection Class: IP30
Flame Retardant Rating: V0
Device Dimensions: 120×120×38 mm
Mounting Hole Distance: 60±5 mm
Heating Time: 2 minutes
Response Time: ≤10 s

Usage: This device is ideal for rooms where ensuring clean air and optimal ventilation is important, such as living spaces, offices, hospitals, shopping centers, or other commercial and industrial locations. It monitors CO2, PM2.5, temperature, and humidity, automatically adjusting the fan speed to maintain air quality. Integrated WIFI and RS485 modules allow easy connection to a mobile app for remote control and local weather forecasts.

Pros:

Smart Control via WIFI: Remote control through the TUYA mobile app allows convenient monitoring and regulation of ventilation.
Air Quality Control: CO2 and PM2.5 sensors enable accurate monitoring and improvement of indoor air quality.
Multiple Control Modes: The ability to choose between automatic, manual, and timer modes provides flexibility.
Weekly Timer Settings: Convenient scheduling to set ventilation modes according to the time of day.
Energy Saving: Screen brightness adjustment and energy-saving mode contribute to lower costs.
Cons:

A stable internet connection and the TUYA ecosystem are required to use WIFI features.
High Price: Due to advanced features, the cost may be higher than standard ventilation controllers.