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Tyrrell Products

I/O module with Modbus TCP/IP or BACnet IP communication- 5DI, 5UI, 4AO, 4DO

I/O module with Modbus TCP/IP or BACnet IP communication- 5DI, 5UI, 4AO, 4DO

Regular price £236.36
Regular price Sale price £236.36
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The iSMA MIX 18 IP module has been equipped with the most commonly used types of I/O in building automation (MIX of all types of I/O in one unit).

The iSMA MIX 18 IP has 5xUI (Universal Inputs), 5xDI (Digital Inputs), 4xAO (Analog Outputs) and 4xDO (Digital Outputs).

Protocols: Modbus ASCII/RTU and BACnet MSTP with built-in Modbus gateway

The module comes pre-equipped with two widely adopted open communication protocols: Modbus TCP/IP and BACnet IP, both of which can be selected using DIP switches. It also features a built-in Modbus Gateway TCP/IP to Modbus ASCII/RTU, allowing seamless connectivity to additional modules/devices that communicate via Modbus RS485. The addressing of the modules is accomplished through rotary switches, simplifying and expediting the system commissioning process. Moreover, the module includes a built-in mini USB port, enabling initial configuration without the need for an external power supply.

5xUniversal Inputs (5UI)

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 0-10 V DC: input resistance 100 kΩ accuracy ±0,1% measurement resolution 3 mV @ 12bit and 1 mV @ 16bit
  • Current input 0-20 mA
  • Resistive input 0-1000 kΩ: measurement resolution for 20 kΩ load 20 Ω @ 12bit and 1 Ω @ 16bit
  • Dry contact input

5xDigital Inputs (5DI)

  • Dry contact inputs
  • Fast pulse counter up to 100 Hz save in EEPROM memory

4xAnalog Outputs (4AO)

All analog outputs are equipped with 12bit ADC provides 10 mV resolution and accuracy less than ±0,5%. They support the following output types:

  • Output 0-10 V DC maximum load up to 20 mA
  • PWM: 0,01 Hz, 0,1 Hz, 1 Hz, 10 Hz, 100 Hz

4xDigital Outputs (4DO)

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


  • 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

  • 24 V AC/DC


  • Dimension: 88x110x62 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
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