RDG264KN KNX Room Thermostat with CO2 Sensor and DC Outputs S55770-T413
The RDG264KN is a KNX communicating room thermostat combining integrated CO2 sensing with DC modulating and on/off outputs — the ideal single-device solution for spaces where CO2 concentration must drive ventilation decisions, including classrooms, meeting rooms, open-plan offices and healthcare facilities requiring demand-controlled ventilation.
Built-in temperature, humidity and CO2 sensors eliminate the need for separate IAQ meters. CO2 values display in ppm or via text indicators. When CO2 exceeds configurable setpoints, the thermostat automatically modulates the fresh air damper via DC 0...10 V analog output, integrating ventilation control directly into the HVAC loop.
| I/O Configuration | 3 analog inputs; 5 analog outputs (valve el. heater: 4 channels, fan: 1 channel DC 0...10 V, fresh air damper: 1 channel DC 0...10 V); 3 digital inputs; 2 relay outputs for valve/compressor/heater at AC 24...230 V with fan 1-/3-speed |
|---|---|
| Operating Voltage | AC 24 V or DC 24 V |
| Communication | KNX S-Mode, ETS configurable |
| Data Sheet | A6V11545853 |
- 2-pipe (electrical heater, radiator/floor, 2-stage heat/cool)
- 4-pipe (electrical heater, 2-stage heat/cool with selectable stage priority)
- 4-pipe with 6-port ball valves
- Heating/cooling with 6-port ball valves
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