Display & Controller 3 Temperature, Humidity and Carbon Dioxide Model HD81

It is an environmental monitor and controller that includes carbon dioxide (CO2) sensors, humidity and 3 temperature sensors. The device has 4 relay outputs that can be adjusted with the keys embedded in the device. The HD81 also has an RS485 port for networking and connecting to a PC or a variety of PLCs, HMIs. The communication protocol is MODBUS / RTU. Sensors (temperature, humidity and carbon dioxide) are manufactured in Europe and have one year warranty and five years of after sales service.

Technical Specifications of Carbon Dioxide Controller, Temperature and Humidity:
Carbon dioxide measurement range: 0 to 10,000 ppm (ranges of 2, 5 and 30% can be ordered)
Carbon dioxide measurement error: 3% ± read
Humidity measurement range: 5 to 99%
Humidity measurement error: 5%
Temperature measurement range: -10 to 60 degrees Celsius
Temperature measurement error: 0.70 ± Celsius
Serial port: RS485-MODBUS / RTU
LCD Display: Carbon Dioxide / Humidity / Temperature
Output Type: Four Relays 1 Amp
Length × Width × Height: 200 * 95 * 60 mm
Weight: 300 g

Carbon Dioxide Applications

Labs
Greenhouses (hydroponic greenhouses)
Poultry, dairy and livestock
Mushroom cultivation halls
Cold storage of meat and fruit
HVAC air conditioning, warehouse, server room etc ..
Features and Features of Carbon Dioxide Controller Display

LCD display
The key to adjusting
4 Output Relay / RS485 port with MODBUS/RTU protocol
Temperature sensors, where the cable length of each sensor can be increased up to 5 meters
Industrial Temperature and Humidity Sensor SHT11 (Customized SHT11)
Power isolation of serial ports and sensors
Optical carbon dioxide sensor with 5 years of life and simple calibration
Characteristics of carbon dioxide display and controller: