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VMB4DC - 4-channel 0/1-10v universal dimmer controller

4-channel 0(1)-10V control. Can be used to control fixtures or dimmers (eg. VMB2LEDDC dimmer for LED strips, and Finder®, Niko® 330-00701 or other 0-10V controlled universal dimmer for mains lamps).


  • 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: moment control, on/off control, timers, slow on/slow off, dimming, moods...
  • Free programmable timer functions (using Velbus Link software and USB/RS232 interface: VMB1USB, VMB1RS or VMBRSUSB)
  • 0 to 10V output or 1 to 10V output possibility
  • 4 independent adjustable channels
  • 250 possible id addresses
  • on board buttons for testing purposes
  • velbus® connection
  • firmware upgradeable through the Velbus system
  • Physical Properties:
    • Number of Channels: 4
    • Width DIN Modules: 2
  • Electrical Data:
    • Maximum Output Current per Channel: 10 mA
    • Standby Current Consumption: 45 mA
    • Maximum Current Consumption: 100 mA
  • Technical Data:
    • Possible Addresses: 250
    • Protocol: 0 - 10 V, 1 - 10 V, Push Button, Velbus
    • DIN rail: Yes
    • Programmable Timer Functions: Yes
  • Set-up Options:
    • Configuration Software: Velbuslink
  • Operational Properties:
    • Instruction Manual Languages: Dutch, English, French
  • Power Supply:
    • Input Voltage Rating VDC: 12-18 V
  • Product Basic Info:
    • Colour: Grey
    • Additional Colour: Green
    • Width: 100 mm
    • Height: 65 mm
    • Depth: 48 mm
    • Weight: 75 g


PDF-File short user manual for VMB4DC
Basic manual explaining the basic functions of the 4 channel 0(1) to 10V output controller
PDF-File extended user manual for VMB4DC
Extended manual that explain how to use all possibilities of the 4-channel 0(1) to 10V output controller


PDF-File Dimming with Velbus
Overview of the possibilities of dimming various types of lighting with Velbus
PDF-File Connection of an RGB LED strip
PDF-File Connection of 2 monochrome LED strips
PDF-File Connection of a universal 0-10V dimmer
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
Q. My 0-10V dimmable light fixture does not turn completely off...
A. This problem can easily be solved by using a Velbus relay to switch the power supply of the light fixture. Read more ... (PDF)
Q. Light switched by sensor at 100% during the day and 25% at night
A. A light needs to be switched at full intensity during the day (07:00 - 23:00), but at night (23:00 - 07:00) at a dimvalue of 25%. How to program this in Velbuslink? Read more ... (PDF)
Q. Dimming with Velbus
A. An overview of the most common options for dimming with Velbus. Read more ... (PDF)
Q. Setting the minimal control voltage
A. If the connected lamp does not function correctly at lower dimming values, set a minimal control voltage in the configuration settings of the dimmer controller. In order to set it correctly, proceed as follows:
- right-click on the dimmer channel and select "operate"
- set the current dimvalue to 1%. Leave this value at 1% for the rest of the process.
- close the "operate" dialog, select the dimmer and open the configuration settings of the dimmer controller
- in the configuration settings, enter a minimal dimvalue of 0,1V and synchronize > write this new setting. If the lamp functions as desired, leave the setting as is.
- If the lamp does not function as desired, increase the minimal control voltage (in the configuration settings) a little, synchronize > write the new value and check whether the lamp works correctly.
- repeat the previous setting until the ideal minimal control voltage has been found.

It might be advisable to let the lamp heat for a while by putting it fully on, then check again if the minimal control voltage is correct.
Q. How can I make a motion detector set a light to a certain dim value during a certain time?
A. A Velbus motion sensor needs to turn a light on at a certain dim value (eg. 50%) during a certain time (eg. 1 minute).
This can be done as follows:
- in the configuration of the Velbus motion sensor module, set the timeout of the motion output to 1s
- create an action "Set to percentage" with the motion output channel as initiator and the dimmer channel as subject. Set the dim percentage parameter (in our example 50%). This action has also a "duration" parameter. Set this to the desired on time (in our example 1 minute)
Q. Making the same button switch a light on/off at 70% luminance during the day and at 40% during the night?
A. In the night hall I have a light that I need to switch on/off at 70% luminance during the day, and at 40% during the night. Read more ... (PDF)
Q. Atmospheric dimvalue toggle in one button
A. How can I toggle an atmospheric dimvalue (eg. set dimvalue to 25% / off) with one button? Read more ... (PDF)