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Metz ModBus MR-DIO 4/2 Input Output Module

SKU: Metz ModBus MR-DIO4/2 Input Output Module


The Modbus MR-DIO 4/2 module a 4 digital inputs and 2 relay outputs with manual control was developed for decentralized switching tasks. It is suitable for accommodating, for example, light switches and window contacts in a room, switching two light strips or controlling louvers. It can also be used to control 2 motorized fire dampers. In this case it is necessary to protect the relay contacts by appropriate load-dependent measures. The MR-DIO 4/2 inputs and outputs can be switched and scanned by means of standard registers via a Modbus master. Module address, bit rate and parity are set with two rotary switches on the front or by software. The module can also be connected to NZ/AUS/EU LoRaWAN networks over the LoRa ModBus Transceiver. It is also available with BACnet MSTP and can be integrated via  IQnexus IoT Platform into Building Automation, Energy-Management and SCADA.


  • Mounting on a 35 mm DIN rail
  • Simple integration into the LVD Board
  • RS485 ModBus RTU Slave
  • Easy to configure
  • IQnexus IoT platform for LoRaWAN

See it in action

See below real life use cases for the ModBus MR-DIO 4/2, please contact us if you want to find out how to install or implement your smart ModBus modules using the IQnexus LoRaWAN ModBus Master Transceiver.