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RDF870MB Modbus Communicating Room Thermostat with Air Quality Monitoring

Immediately available

RDF870MB Modbus Communicating Room Thermostat with Air Quality Monitoring

Immediately available

Brand: Siemens

User interface: LCD Display

Operating Voltage: 230 VAC

Control Signal: 0..10 VDC

Fan output: EC Motor

communication: RS 485 Modbus

Flush Mount Touch MODBUS PM2.5 & CO2 Ventilation Controls, compatible with on/off or ECM fans and featuring 2x DC 0-10V input. Operates on AC 230V with a large, backlit display for easy monitoring. Control PM2.5 and CO2 levels, view room and outdoor temperatures, VOC, and relative humidity. Offers flexible fan output options, multifunctional sensor inputs, various operating modes, and Modbus compatibility for streamlined commissioning. Fits both round and square conduit boxes, available in ivory white.”

Product information "RDF870MB Modbus Communicating Room Thermostat with Air Quality Monitoring"

AC 230 V operating voltage, large, backlit display
Display and setpoint adjustment for PM2.5 (Particulate Matter) and CO2 (Carbon Dioxide) control
Display of room temperature, outside temperature, VOC (volatile organic compound) and RH (relative humidity)
Support 1-/3-/4-speed On/Off fan or ECM (DC) fan output
Two multifunctional inputs for external passive and DC 0-10 V sensors
Operating modes: Comfort, Economy and Protection
RS485 Modbus RTU slave mode
Modbus commissioning via third-party tool, e.g. Modbus scan, Modbus poll, etc
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

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)