Velux or Fakro?

I’ve just configured some Velux Integra windows for a client.

As far as I can make out, there is no way to directly control them over TCP (for example).

They need a Velux central controller, called a KLF200

This has sets of contact closures for operating the 5 Velux window groups. (You can put as many windows as you like into each group)

Wiring PDF

I connected a bank of small relays to the contact closures to give control from Velbus and OpenHab2

I hope this helps.

FYi

Keyline don’t (as yet) have any kind of central controller, only RF remotes.