Any Binding for Voltomat Wi ART - 868 Mhz?

A friend of mine is intalling Voltomat Wi ART - 868 Mhz components in his house.

Can’t find much about these things. It seems that voltomat is not a manufacturer but sells stuff from different manufacturer in “bauhaus” stores.

Wondering if they can be switched via Openhab maybe via some CUL transport based binding ?

Never seen this brand. So far Intertechno was a “quasi” standard. But the messages for those are sent on 433mhz. Have a look at rfxcom.