VM167 digital input/output characteristics

Hi,
I am having difficult times to find tech spec explaining digital input and output electrical characterstics, fanout, mapping between logical states and voltage and input/output isolation for MV167. Am I missing some document which describes this? Like K8061 docs for example. Thank you for help.

The specifications are available on this page:
velleman.eu/products/view/?id=384006

On this page there is the software developmewnt kit where the input/output use is described:
velleman.eu/support/downloads/?code=VM167