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IO-RM Relay Modules


This range of relay modules is intended for use with BMS controllers to convert an analogue control output to various switching relay modes. Example applications include the control of raise/lower valves, damper actuators, pump changeover and boiler control. LEDs indicate correct operation and Hand/Off/Auto jumpers ease commissioning. Low current draw from 0-10Vdc controller output means that the IO-RM range works successfully with most BEMS controllers.


  • Fault finding LED indication
  • Relay status LED indication
  • Link selectable switching modes
  • On/Off/Auto links for ease of commissioning


Download full datasheets for these products below.

Code Name Price Quantity
IO-RM1-12DC Single Relay Module 12Vdc
1+ (USD) $9.34
IO-RM1-240AC Single Relay Module 240Vac
1+ (USD) $14.68
IO-RM1-24AC Single Relay Module 24Vac
1+ (USD) $10.68
IO-RM1-24DC Single Relay Module 24Vdc
1+ (USD) $10.68
IO-RM-2 Two stage Relay Output Module
1+ (USD) $40.03
IO-RM-3 Three Stage Relay Output Module
1+ (USD) $66.71
IO-RM-4 Four Stage Relay Output Module
1+ (USD) $89.00
IO-RM-8 Eight Stage Relay Output Module
1+ (USD) $204.83
IO-RM-A Adjustable Switching Point Relay Module
1+ (USD) $52.29