Rf 868 en 433 remote controls change to zwave

I have a lot of generic remote controlled equipment in our new house that all work with rf-868 remote controllers.
We all know that there is no software solution to operate them with Homey so I’m now looking for a workaround.
Since the remote controllers have microswitches inside I am looking for a way to “short-circuit” a microswitch with a Zwave controlled device which will be hard wired connected. to the remote controller

Anybody an idea?

Preferably cheap since I have 15 buttons to do.

Maybe the solution in this topic is an option for you?

It’s not z-wave, but z-wave is never cheap.