Legrand Bticino ? How?

Hi, I’m trying t help out a friend who had his home done with legrand backend and bticino buttons. I have no idea about legrand whatsoever.

I can see these modules in the back

Can this be controlled via HA? There was a crestron processor earlier which was used to control this system but that is not working anymore and I want to use HA.

Also how does HA interface into the legrand bus? There must be some legrand protocol - IP converter or the like, right?