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Metz ModBus MR-TO4 Triac Output Module

SKU: Metz ModBus MR-TO 4 Triac


The ModBus MR-TO4 Triac output module with 4 digital triac outputs was developed for decentralized switching tasks. It is suitable for switching electrical components, such as relays, contactors, HVAC valves, etc. The outputs can be switched by means of standard registers via a Modbus master. In addition, the MR-TO4 outputs can be overridden manually by means of switches on the device. Module address, bit rate and parity are set with two rotary switches on the front or by software. Suitable for decentralized mounting on DIN TH35 rail according to IEC 60715 in electrical distribution cabinets. 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-TO4, 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.