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VMB4RYNO - 4-channel relay module with potential-free contacts for din rail

4-channel relay module with 40 modes.


  • Only a qualified professional may carry out the installation in conformity with in force legislation and standards.

  • protocol manuals for developers

    available for download at https://github.com/velbus

  • different operation modes: momentary control, on/off control, start/stop timer, staircase lighting timer, non-restartable timer, switch-off delay, switch-on delay, start timer by releasing push button, timer with blinking effect, 2-way timer...
  • free programmable timer functions (using Velbus Link software and USB/RS232 interface (VMB1USB, VMB1RS or VMBRSUSB)
  • 250 possible id addresses
  • manual push buttons on board for testing purposes
  • Velbus® connection
  • 4 Modules wide on the DIN rail
  • firmware upgradeable through the Velbus system
  • high inrush (80A) current relays are used
  • relays:
    • type: 4 potential-free contacts
    • DC: 12A / 30 VDC max.
    • AC: 16A / 230VAC max.
  • power supply: 15±3VDC
  • typical power consumption: 250mA max. (30mA standby)
  • dimensions: 90 x 71 x 58mm / 3.5 x 2.8 x 2.3"
  • width: 4 DIN modules


PDF-File short user manual for VMB4RYNO
Basic manual explaining the basic functions of the programmable 4 channel relay module. (Rev.3)
PDF-File extended user manual for VMB4RYNO
Extended manual that explain how to use all possibilities of the module relais programmable à 4 canaux


EXE-File VelbusLink 10.8.1 (EN/NL/FR) - Latest version
Free Windows program to configure and program a Velbus installation (latest version - 05/19/2022)
PDF-File Velbus Installation Guide, Part 1: Hardware and Cabling
Everything you need to know about the Velbus hardware
PDF-File Velbus Installation Guide, Part 2: Configuration
How to configure Velbus modules using the free software VelbusLink
PDF-File Velbus Troubleshooting Guide
Step-by-step guide for solving Velbus problems.
EXE-File VelbusLink 10.6.5 (EN/NL/FR) - Previous version
Previous version of VelbusLink
XLSX-File Velbus consumption calculator
Spreadsheet to calculate the number of power supplies you need in a Velbus installation.

Info Sheets

PDF-File Infosheet
HTML-File Velbus actions by module (click on an action to see a description)
List of actions per module