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RI-MDU10 - Metering Display Unit - easywire modular


  • Reduce the size of your panel with one cut out for all the metering requirements
  • Reduce labour costs using Rayleigh easywire® plug and play technologies
  • Increase safety, only 24 VDC on door
  • Available in 7 and 10 inch screens
  • High resolution full colour touch display
  • View up to 128 three phase meters or 384 single phase meters on one Meter Display Unit (MDU)
  • Monitor breaker status - Tripped/ on / off with data logging
  • One month of historic data can be viewed from the meter display unit as a 'standalone' unit
  • All historic data logging can be stored and viewed when connected to our rayleighconnect™ cloud system
  • Simple intuitive programming and navigation through the MDU display
  • Built in RS485 Modbus output


The RI-MDU10 series is a Metering Display Unit designed to compliment our rayleighconnect™ system for the control and monitoring of local or remote devices.

  • Built in web browser allowing remote monitoring and control from anywhere in the world
  • Historical data can be displayed via graphs, charts or exported via CSV
  • On board storage for switchgear maintenance records and design drawing
  • Create alarm function via either text message or email if connected to rayleighconnect™ cloud system


The RI-MDU10 gets data from meters through Ethernet slave devices which function as Modbus masters (RI-EX20). The Ethernet port on RI-MDU10 functions as a network router and has DHCP enabled. All traffic on Ethernet network is encrypted. Up to 8 Ethernet devices are supported and every Ethernet device has its own Modbus network with slaves which have independent addressing. Eg. there can be two Modbus slaves with address 1. All end slaves are addressed from 1 to 16. The RI-MDU10 has RS-232 or RS-485 ports with Modbus RTU slave function allowing other systems like BMS or rayleighconnect™ (Online) to access the data.

easywire modular system schematic

Read more about - easywire®
Read more about - rayleighconnect

Additional Information

Manufacturer Rayleigh Instruments



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