Technical Specifications:

CO2 and VOC Sensor Control: Controls CO2 and VOC concentration in the room
Operating Modes: Automatic, manual, timer control
Fan Speed Modes: High, medium, low, automatic
Weekly Timer: Different fan speeds based on the set schedule
On/Off Timer: Timer with the option to set on and off times
RS485 Communication: Communication with other devices via RS485
TUYA WIFI Mobile App Control: Ability to control the device using the TUYA mobile app
Temperature and Humidity Measurement
Energy-saving Mode: Screen energy-saving mode with adjustable brightness
Time and Temperature Readings: Display of time, temperature, and humidity
Child Lock: Protection against accidental setting changes
Power Supply: VAC 95-240V
CO2 Regulation Range: 0-3000 PPM
CO2 Display Range: 0-5000 PPM
VOC Display Levels: 0-1-2-3 levels
Sensor Warm-up Time: 2 minutes
Response Time: ≤10 s
Temperature Display Range: 0-99°C
Humidity Display Range: 5-90% RH
Control Power: ≤200 W
Rated Power: <2 W
Output Connection: 3-speed fan 0-10VDC 
Dimensions: 120×120×38 mm
Mounting Hole Distance: 60±5 mm
Protection Class: IP30
Fire Resistance Class: V0
Usage: This device is designed to ensure good air quality in various spaces, including offices, hotels, schools, shopping centers, sports and leisure venues, and home environments. It controls CO2 and VOC concentration, automatically adjusts fan speed, and helps ensure proper air circulation. Additionally, the device provides the ability to monitor and control air parameters such as temperature, humidity, and air quality via the TUYA WIFI mobile app, making it easier to control and optimize heating, cooling, and ventilation systems.

Pros:

Smart control with WIFI and TUYA app: Remote control of the device via mobile app.
Accurate CO2 and VOC control: Helps ensure healthy and clean indoor air.
Weekly timer: Set fan speed based on a schedule, tailored to user needs.
Supports various modes: Automatic, manual, and timer modes provide flexible and convenient control.
Energy-saving: Adjustable screen brightness and energy-saving modes help reduce energy costs.
Cons:

More complex installation: Requires knowledge and skills for installation and WIFI configuration.
High price: Due to smart features and technology, the device may be more expensive than basic ventilation system controllers.