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iSMA-B-4I4O-H - 4 universal inputs, 4 relay outputs
  • iSMA-B-4I4O-H - 4 universal inputs, 4 relay outputs

iSMA-B-4U4O-H - 4 universal inputs, 4 relay outputs

  • 4 universal inputs: temperature, analog, digital dry contact, 4 relay outputs
  • Communication: BACnet MS/TP, Modbus ASCII/RTU
  • Manual Override Switches
  • Built-in HVAC and Light Applications

GET A QUOTE: ampero@ampero.eu



iSMA-B-MINI-RS - Datasheet

 iSMA-B-MINI-RS - Karta katalogowa

 Multiprotocol I/O Modules Bacnet - Manual

 Multiprotocol I/O Modules Modbus - Manual

Bacnet.png Modbus.png

Multiprotocol I/O Module in a Compact Size with Built-in Light Applications

Powerful I/O module that works as a remote I/O over a serial port with open protocols, BACnet MS/TP and Modbus RTU/ASCII. A compact size and ease of installation allow the module to be fitted even into limited space installations. The module is equipped with HVAC light applications that control the output based on the input measurement.

4 Universal Inputs

Support for over 20 types of temperature sensors and voltage, resistance, current, and dry contact measurements on each universal input.

4 Relay Outputs

Digital outputs equipped with normally open 3 A relays allow for direct control without additional relays.

Manual Override Switches

Each output can be manually overridden using a dedicated hand-operating switch.

Built-in Light Applications

Light control configurable algorithms make the module applicable as a standalone controller.

Built-in HVAC and Light Applications

Light, cooling, and heating configurable algorithms make the module applicable as a standalone controller.

Simplified Configuration and Commissioning Process

The module allows for seamless configuration over BACnet, Modbus, or dedicated free of charge tool. The ability to be powered from a USB port facilitates local testing and a straightforward updating process, and the high-end RS485 transceiver allows up to 128 devices to communicate reliably with the client on a single bus.

Quality and Reliability Confirmed by Certificates

iSMA CONTROLLI is a long-standing member of the BACnet community. The experience in developing high quality products and the BTL (BACnet Test Laboratory) certification confirms the excellent performance of communication using the BACnet protocol.



  • RS485 interface
  • miniUSB type B interface
  • Status LED indicator
  • DIN rail mounted
  • 4 universal inputs, dry contact inputs
  • 4 relay outputs


  • 4 universal inputs:
    - temperate: 10K3A1, 10K4A1, Carel 10K, 20K6A1, 2.2K3A1, 3K3A1, 30K6A1, SIE1, TAC1, SAT1, Pt1000, Ni1000 0C, Ni 1000 20C, Ni1000 LG
    - resistive: 0-1000 kΩ
    - voltage: 0-10 VDC
    - current: 0-20mA
    - digital: dry contact


  • 4 relay outputs
  • NO relay outputs
  • Resistive load max. 3 A @ 230 V AC / 30 V DC
  • Inductive load max. 75 VA @ 230 V AC / 30 W @ 30 V DC


  • BACnet MS/TP
  • Modbus RTU/ASCII
  • Free software iSMA Configurator
  • Dedicated Niagara Framework modules


  • 24 V DC ± 20%
  • 24 V AC ± 20%

Product Details


Specific References

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