K8062D.dll and C program ?

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