Velux reasable Rookie


I am just starting with openHAB and want to integrate my Velux window control to OpenHAB.

Now I disassembled the construction controlling my windows ( Velux 863695 ) find the pictures attached.

As i learned by searching this forum, controlling Velux windows is done by first of all installing an expensive switch.

I was wondering if someone could tell my if i am also able to install a new control for the engine and bypass all the Velux installations by this, only remotecontrol the engine by openHAB.

Another problem is, that this windowengine gets its power by solar panels and attached batteries. So there is no direct powercabling so e.g. a Shelly 25 will not work.