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8-channel usb relay card

Velleman VM8090: Eight Channel USB Relay Card

Velleman VM8090

The VM8090 8 Channel USB Relay Card (Velleman Module No Soldering Required)

With eight relays and a USB interface, the Velleman VM8090 can give you more control from your computer. Each relay can handle a load up to 16 Amps because of the transient suppression VDR (type VDR300). The VM8090 works well with inductive loads. On-board buttons will allow you to activate the relays for testing manual operation, for toggle, momentary, or timer operation (selectable through software).

LEDs will tell you when the board has power and which relays are active. You can download the test software, DLL, and examples from the Velleman website to develop your own custom software. The VM8090 can use AC 9 to 10 power or a DC power supply 12 to 14 volts. Looking for a USB interface board? Try the Velleman K8055 USB Interface I/O Board Kit. 



  • Power supply for relays: 9-10Vac or 12 to 14Vdc (500mA), example: PS1205
  • 8 high-power relays: 16A each (resistive load)
  • Dimensions: 160 x 107 x 30mm / 6.3 x 4.2 x 1.2"



Server application (Windows) for the Mobile K8090 iOS app
Install this server to use your iPhone or iPad to operate your K8090 with the [link url=http://itunes.apple.com/us/app/mobile-k8090/id456579604?mt=8]Mobile K8090[/link] app available on iTunes.

Server application (Windows) for the K8090 Remote iOS app
Install this server to use your iPhone or iPad to operate your K8090 with the [link url=http://itunes.apple.com/us/app/k8090-remote/id503106849?ls=1&mt=8]K8090 Remote[/link] app available on iTunes.

Software package for K8090, build 100820
Getting started guide,protocol manual,drivers,DLL with VBexpress 2008 .net example,standalone test/demo software. Download and install this software before using our K8090.

Info Sheets

Overview of Velleman modules that are equal to D.I.Y Kits
This sheet is useful when you want to know which modules you could find in the do-it-yourself range of Velleman Kits and minikits.

Product information

 Warning: this product can expose you to chemicals which are known to the State of California to cause cancer, birth defects or other reproductive harm. For more information go to: www.P65Warnings.ca.gov/product