RDG204KN KNX communicating room thermostat with CO2 sensor. Outputs modulating (PWM / 3-pos.) or on/off. Fan coil (3-speed / DC fan), universal H/C applications, VAV fresh air

• Built-in temperature, humidity and CO2 sensors
• Indoor air quality monitoring and controlling (CO2) via fresh air damper
• Display of CO2 value in ppm (parts per million) or with text
• For applications with 2-position (on/off or PWM) or 3-position control outputs
• For applications with 3-speed or DC 0…10 V fan
• AC 230 V or AC 24 V power supply.

Application selectable:

• 2-pipe system
• 2-pipe system with electrical heater
• 2-pipe system and radiator / floor heating
• 2-pipe / 2-stage heating or cooling
• 4-pipe system
• 4-pipe system with electrical heater
• 4-pipe / 2-stage heating and cooling system (selectable also for 2-stage cooling / 1-stage heating or 2-stage heating / 1-stage cooling)