Reading the article...it appears that this unit was meant for use with organs, and that Control connector would be a multi-pin connector running back to the organ, and more specifically with a Schober brand organ...so I'm not sure you will be able to do any "controlling" with it differently.
There is mention in the link article that this unit can also work with non-Schober organs, but you need to have them (Schober) provide for you installation instructions.
Hate to say it...but as-is, you may only get one kind of effect out of the unit (whatever it defaults to without the organ control)...and that's it.
Ehh...for $30 it isn't a major setback.