Soldering kit, DIY, 8-channel USB relay card
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SKU : WSI8090
Quantity on Hand : 1
Skill Level : Kit - Basic Soldering Required

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Description: Control 8 relay channels from your computer! Connect your PC to the outside world via the USB port.

Connect up to 16A to each high-power relay. Equipped with space for additional VDR noise suppressors, the ability to test/control all relays via on-board push buttons.

You can download a DLL for custom software development from our website. A test software completes the package.


  • Discover the fascinating world of Whadda soldering kits and learn the basics of electronics through engaging projects. The kits offer step-by-step instructions and clear explanations, allowing both beginners and experts to learn and experiment.
  • Creativity: Give space to your imagination and create unique electronic projects with the Whadda soldering kits. Unleash your creativity and build something that is truly yours!
  • Made in Belgium: Whadda is a unique brand from Belgium's Velleman Group that offers DIY projects for hobbyists or makers who want to immerse themselves in electronics, programming and mechanics.
  • STEM project: Develop and improve your STEM skills and acquire the knowledge, skills and experience needed to face the technological challenges of the future with this educational kit. This educational kit will trigger a number of processes such as problem-solving, investigative and creative thinking.
  •  Perfect for young and old: With this experiment kit, children and adults with little or no prior knowledge can take their first steps into the exciting world of electronics and advanced users can deepen their knowledge.

- The kit is ideal for youngsters and adults aged 9 to 99! However, children under 14 must be accompanied by an adult.

- To get started, you will need the following basic tools (not included): a soldering iron or soldering station, soldering tin and a pair of cutters. Another practical tool is an anti-static soldering mat.


  • power supply for relays: 9-10Vac or 12 to 14Vdc (500mA), example: PS1205
  • 8 high-power relays: 16A each (resistive load)

Operational properties

  • Instruction manual languages Dutch, English, French, German, Spanish
  • Coding skill level none
  • Electronics skill level 2
  • Mechanics skill level 3
  • Soldering skill level 3

Product basic info

  • Colour unit Green
  • Width unit 18 cm
  • Weight unit 324 g
  • Height unit 15.5 cm
  • Depth unit 5.5 cm

Documentation and Downloads