Home :: IO Module :: iSMA-B-8U


0.30 Kgs
Our price:
£232.80 (272.38)
including VAT 20.00 % ( £38.80 )

The product group of I/O modules MINI series has been designed to complement the I/O modules of the MIX series. Unlike the MIX series, the MINI line is dedicated to all the applications where hand operating switches are required. Also, the MINI line products’ light-controlling algorithm makes them applicable as lighting controllers. Very much like in case of the MIX modules, the modules are factory-equipped with the two most popular open communication protocols: Modbus (ASCII, RTU, TCP/IP) and BACnet (MSTP, IP), which are selected using DIP switches. There are two versions of the modules, namely: modules with interface RS485, and modules with interfaces 1x Ethernet and RS485. Devices with interfaces 1x Ethernet and RS485 have the added functionality of ” Modbus Gateway TCP/IP to Modbus ASCII/RTU”, enabling you to connect additional modules/devices that communicate via Modbus RS485. One major advantage of supporting our modules with open communication standards is the versatility to install them in both new and completed installations, as part of an existing BMS. To even further increase the versatility, all relay modules allow direct control of any system components supplied with 230 VAC (max. 3A or 8A ). As it does not require the use of additional relays, it thereby leads to considerable savings. 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.

8x Universal Inputs (8UI)

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



  • 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

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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