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Siemens RDF870KN

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Siemens RDF870KN, S55770-T407

Touch Screen Flush-mount PM2.5 & IAQ Controller with KNX

  • AC 230 V operating voltage, large, backlit display
  • Display and setpoint adjustment for PM2.5 and CO2 control
  • Display of room temperature, outside temperature, VOC (volatile organic compound) and RH (relative humidity)
  • Support 1-/3-/4-speed On/Off fan or DC fan output
  • Two multifunctional inputs for external passive and DC 0…10 V sensors
  • Operating modes: Comfort, Economy and Protection
  • KNX S-Mode
  • KNX commissioning via ETS or local control parameters
  • KNX integration into Desigo via group (ETS) or individual addressing
  • KNX integration into third-party system via group addressing (ETS)
  • Mounting on recessed square 86 mm box or round 60 mm with 60 mm fixing centers and minimum 40 mm depth
  • Color of housing: Ivory white (RAL 9001)
Application selectable:
  • PM2.5 control only
  • CO2 control only
  • PM2.5 & CO2 controls (CO2 higher priority in control)
  • Ventilation control
Additional info
2x sensor inputs are selectable:
0: No function
1: Temperature (AI) (NTC 10k)
2: Temperature (AI) (0…10 V)
3: PM2.5 (AI) μg/m3 (0…10 V)
4: CO2 (AI) ppm (0…10 V)
5: VOC (AI) % (0…10 V)
6: VOC (AI) mg/m³ (0…10 V)
7: RH (AI) % (0…10 V)
8: Alarm input (DI)
9: Dummy AI (0…10 V) (RU only)