Extension of wires of VMB8PBU push button module

In the manual of the push button input module I read “DO NOT extend the connection wires for the pushbuttons.”
Under what conditions can this be deviated from?
This is important to me because I want to implement Velbus in an existing house where I cannot always hide a push button module in the spare room behind the pushbutton.

Unfortunately that means exactly what it says.

You could try these



(Which has an input connection)

Ok, thx for the info.

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