IO-RM4 - 4-Stage Relay Module

On request
£38.13 £45.76

Relay module with 4 switching outputs from 1 analog input. 


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

More Information
Description -
Manuals & Datasheets
Technical Information Input signal: 0-10Vdc Output signal: 0-10Vdc direct or buffered Max. output current: 20mA per channel in buffered mode Power supply 21Vdc to 40Vdc 21Vac to 27Vac Max. supply current AC supply 260mA DC supply 115mA Fused output 24Vac @ 8A Manual override Hand/Off/Auto Jumper selectable with screwdriver adjustment of output voltage in ‘Hand’ position Fuse 8A max. Electrical connections Rising cage terminals for 0.5- 2.5mm² Ambient -10 to 50°C (14 to 122°F) Dimensions 105 x 106 x 70mm (4.09 x 4.17 x 2.76”) Country of origin UK
Manufacturer Sontay