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BACnet MS/TP Room Interface Module 4 Buttons

BACnet MS/TP Room Interface Module 4 Buttons

BAC-RI-4B is a digital room interface with additional inputs and outputs that can be operated via BACnet. The room interface shows the current temperature, current system status including day/night mode, heating/cooling, fan speed, up and down indicating arrows (set via BACnet.).

The device is wall mounted and the LCD display has adjustable level blue backlight. The BAC-RI-4B has four push buttons for the user setpoint, fan speed and day/night mode adjustment. It supports BACnet MS/TP RS-485 communication. Built-in sensor. Additonal IOs include: 1 Digital Input, 1 NTC10/Resistive Input, 2 Digital Triac Outputs, 1 Analogue 0..10Vdc Output. 24Vac/dc power supply. Relative humidity option available for display and monitoring.


  • Power supply: 24Vac/dc -10%/+15%
  • Analogue Outputs: 1 x 0..10V < 5mA
  • Digital Outputs: 2 x 24Vac Triacs; 1A maximum; requires 24Vac Power Supply
  • Digital Inputs: 1 x Volt-Free Contact, Impedance <1KOhm
  • Resistive Input: 1 x Resistive Input, NTC10/0..50kOhms (network read)
  • Temperature Range: 0..50°C (32..122°F)
  • Temperature Accuracy: ±0.3°C
  • Communication: BACnet MS/TP
  • Interface RS485: maximum 63 devices
  • MAC Addressing: 0..63 via a bit switch; 0..247 via tool / network
  • Communication: 9k6/19k2/38k4/76k8 Baud; Parity None/Even/Odd, 1 or 2 Stop
  • Bits (baud rate adjustable through bit switch)
  • Temperature: 0°C...+50°C (32..122°F)
  • Humidity: 0...95%rh (non-cond.)
  • Standards CE: Conformity CE Directive 2004/108/EY EN61000-6-3: 2001 (Generic Emission) EN61000-6-1: 2001 (Generic Immunity)
  • Degree of Protection: IP20
  • Housing: ABS Plastics, Self Extinguishing



SKU:  SXS-130

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