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VMB4PB - 4-channel push button interface

Push button interface for connecting up to 4 push buttons (with optional feedback LEDs) to the Velbus home automation system.

Equivalent product: VMB2PBN-R


  • 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

  • connect up to 4 push buttons
  • connect up to 4 notification or backlight LEDs (optional) with operating voltage up to 24 V (AC or DC)
  • adjustable light intensity for the connected LEDs
  • suitable for common anode and common cathode LEDs
  • adjustable button response time (0, 1, 2 or 3 seconds)
  • detection of short or long button press
  • configurable multi-channel operation on push button, the next channel is selected at each press (up to 8 channels)
  • configurable dual channel push button, a different channel is selected depending on the length of the push (short or long push)
  • extensive day, week and year programs plus a built-in astronomical clock (sunrise and sunset timing) are included to operate push buttons automatically
  • configurable using a Velbus configuration module and the free VelbusLink program
  • Physical Properties:
    • Number of Channels: 4
  • Electrical Data:
    • Current Consumption: 50 mA
    • Standby Current Consumption: 25 mA
  • Technical Data:
    • Protocol: CAN bus
    • Common Pole Type: Anode, Cathode
    • Output: Type: open collector / Maximum operating voltage: 15 VDC / Built-in series resistor: 1.5 kOhm / Usage: a.o. for feedback or notification LEDS (common anode or common cathode) with operating voltage up to 24 V (AC or DC)
    • Mounting Type: Cable mounting
  • Set-up Options:
    • Timer Range: 1 day, 1 week, 1 year
    • Configuration Software: Velbuslink
  • Environmental Data:
    • IP Rating: IP10
  • Operational Properties:
    • Number addresses: 250
  • IT Connections:
    • Interface Type: 4-channel push button interface
  • Power Supply:
    • Input Voltage Rating Vdc: 12-18 V
    • Maximum input voltage rating VDC for potential free contacts: 3 V
  • Included:
    • LED Indicator: Yes
  • Product Basic Info:
    • Colour: Black
    • Additional Colour: Green
    • Height: 38 mm
    • Depth: 16 mm
    • Width: 36 mm
    • Weight: 20 g


PDF-File Short user manual


EXE-File VelbusLink 10.8.5 (EN/NL/FR) - Latest version
Free Windows program to configure and program a Velbus installation (latest version - 09/22/2022)
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