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Velleman 8 Channel USB Relay CardVelleman Kits

Velleman 8 Channel USB Relay Card

Specification Features:

  • USB-controlled relay card
  • Manual operation for toggle, momentary or timer operation (selectable through software)
  • Timer settings up to 18 hours (DLL function)
  • Optional open collector connectivity (push button simulation
  • DLL for own software development (download only)
  • Event-driven and open protocol
  • Two way PC communication (USB Event return option)
  • Optional VDR (type 741-471) transient suppression for use with inductive loads
  • LED indication for power and relay action
  • 8 high-power relays: 16A each (resistive load)
  • Minimum system requirements:
  • PC running USB compatible Windows version
  • USB1.1 and USB2.0 full speed compatible
  • Internet connection for software download

Read the fully Illustrated Assembly Manual for K8090

PDF Download

Power Supply

9 - 10Vac or 12 t- 14Vdc (500mA)




160 x 107 x 30mm



K8090 is a card which can be interfaced with your PC, it has eight relay channels which are controlled by your computer. Use your computer USB port to connect to the outside world. It will allow you to connect a load of up to 16A on each of the high power relays. The board has space for extra VDR noise suppressors, it is provided with on board push buttons for test operating all the relays. Each channel also has LED to indicate condition of relay.

The Velleman K8090 is available as a ready built module VM8090

Additional software to up grade and improve this product is available from our download section on this website.

iPhone/iPad app used for the Velleman K8090 8-Channel USB Relay Board. Download the app here:K8090 iPhone/iPad.
Order Code Each 
K8090Velleman 8 Channel USB Relay Card32.25 


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