Hello @jyb46
Mybe this help you further,
https://cdn.velleman.eu/downloads/files/downloads/k8062sdk.zip
https://cdn.velleman.eu/downloads/files/downloads/k8062_dll_source.zip
Version 3 dll source file and the .lib file:
Here you can download v3 dll together with the .lib file:
Best Regards,
Velleman Support