IO Modules


  • Brand:iSMA
  • Category: All Products, Bacnet IO Modules, Centraline Compatible IO, Dell Edge Compatible IO, Distech IO Modules, GreenBox 360 Compatible, Hand Operating IO Modules, HVAC BMS Controls, IO Modules, IO Modules for underfloor heating and cooling, iSMA Range, Mini IO Modules, Modbus IO Modules, Other products, RS485 IO Modules, Tridium Compatible IO Modules, Tridium compatible products
Availability: In Stock
£229.00 GBP
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The module is factory-equipped with the two most popular open communication protocols: Modbus ASCII/RTU andBACnet MSTP, which are selected using DIP switches.

Addressing the modules is via rotary switches, which facilitates and accelerates the process of commissioning the system.

Built-in mini USB allows for initial configuration of the unit without power supply.

BMS Compatibility 



Tridium Jace3, Jace6, Jace8000 Compatible

Click here for IO Modules 100% compatibility with Trend IQ3, IQ4 Bacnet IP Compatible range

Click here for IO Modules 100% compatible with Siemens PX range
Click here for IO Modules 100% compatible with Cylon Bacnet controllers
Click here for IO Modules 100% compatible with Schneider Electric StruxureWare Bacnet controllers

Click here for IO Modules 100% compatible with OSS NeOSS building management controller
Click here for IO Modules 100% compatible with Priva Blue ID
Distech EC Bos Compatible


Honeywell  Centraline IO MODULES Compatible with any Hawk

Delta Controls Compatible IO Modules
Greenologic GreenBox Compatible IO Modules
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4x Universal Inputs (4UI)

All universal inputs have 16-bit resolution which support the following types of inputs:
  • Temperature input support the following types of sensors: 10K3A1, 10K4A1, Carel 10K, 20K6A1, 2.2K3A1, 3K3A1, 30K6A1, SIE1, TAC1, SAT1, Pt1000, Ni1000 For sensor Pt1000 and Ni1000 use only 16bit resolution
  • Voltage input 0-10VDC: input resistance 100kΩ accuracy ±0,1% measurement resolution 3mV@12bit and 1mV@16bit
  • Current input 0-20mA
  • Resistive input 0-1000kΩ: measurement resolution for 20kΩ load 20Ω@12bit and 1Ω@16bit
  • Dry contact input

4x Digital Outputs (4DO)

  • Relay output (NO) max. 3A, 250V AC/30 VDC


  • Cortex-M3


  • Interface RS485 half duplex
  • Up to 99 devices on the bus
  • Protocols: MODBUS or BACnet
  • Baud rate: 2400 to 115200 bps

Power supply

  • 24V AC/DC


  • Dimension: 35x110x62 mm.
  • Construction: plastic, self-extinguishing (PC/ABS)
  • DIN rail mounting (DIN EN 50022 norm)
  • Cooling: internal air circulation


  • Operating temperature: -10°C to 50°C
  • Storage temperature: -40°C to 85°C
  • Relative humidity: 5 to 95%, no condensation
  • Ingress Protection Rating: IP40 – for indoor installation 


Pdf 07203e634431f4d17e7c6c921cd94f1e9d74d1f6a670624fd1f197332e7ccd38 iSMA-B-4U4O-H Installation Instruction
Pdf 07203e634431f4d17e7c6c921cd94f1e9d74d1f6a670624fd1f197332e7ccd38 iSMA-B-MINI Datasheet
Pdf 07203e634431f4d17e7c6c921cd94f1e9d74d1f6a670624fd1f197332e7ccd38 MINI and MIX Series IO Modbus Manual
Pdf 07203e634431f4d17e7c6c921cd94f1e9d74d1f6a670624fd1f197332e7ccd38 MINI and MIX Series IO BACnet Manual
  Pdf 07203e634431f4d17e7c6c921cd94f1e9d74d1f6a670624fd1f197332e7ccd38 BTL_Cert_30201_GlobalCont_iSMABMINII
  Pdf 07203e634431f4d17e7c6c921cd94f1e9d74d1f6a670624fd1f197332e7ccd38 BTL_Listing_30201_GlobalCont_iSMABMINII
  Pdf 07203e634431f4d17e7c6c921cd94f1e9d74d1f6a670624fd1f197332e7ccd38 iSMA-B-MINI_Declaration_of_Conformity
    Pdf 07203e634431f4d17e7c6c921cd94f1e9d74d1f6a670624fd1f197332e7ccd38 Mechanical_drawing iSMA-B-4U4O-H
   Pdf 07203e634431f4d17e7c6c921cd94f1e9d74d1f6a670624fd1f197332e7ccd38 iSMA_Configurator_Release_Notes
   Pdf 07203e634431f4d17e7c6c921cd94f1e9d74d1f6a670624fd1f197332e7ccd38 iSMA-B-MINI_RS_Series_FW_Release_Notes



In the DOWNLOAD session you can find:

  • The ISMA driver for Niagara, which contains the ISMA device Palette
  • Isma configurator which is needed for updating firmware and configure modules
  • Templates for Siemens sensors for Niagara (Generic Tabular) - Ni1000 Ohm at 0°C - PTC T1 (Resistance/Voltage) - Pt100 Ohm at 0°C - Pt1000 Ohm at 0°C - Pt1000 Ohm at 0°C - Pt1000 Ohm at 0°C - Pt1000 Ohm at 0°C - Pt1000 Ohm at 0°C  -    Ni100 Ohm at 0°C - Ni100 Ohm at 20°C - NTC 107 Ohm at 20°C - NTC 150 Ohm at 31°C - NTC 1 kOhm at 20°C - NTC 1 kOhm at 20°C - NTC 2 kOhm at 20°C - NTC 3850 Ohm at 0°C - NTC 500 Ohm at 20°C - NTC 575 Ohm at 20°C - NTC 8250 Ohm at 19°C

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