This is a possible Loxone Air solution:
The temp/humidity sensor includes two digital inputs.
Or this one:
With 2 outputs and 6 inputs.
But with these solutions you still need wired door and window contacts.
Loxone Air uses 6LoWPAN over 868Mhz (in Europe), but as far as I know there aren't any window/door contacts which use that standard. Most 6LoWPAN devices are still fairly large or so it seems. Of course you can use all kinds of different wireless contacts if you create/buy a bridge between the protocol that these contacts speak and something that the Miniserver understands... But your options really depend on your technical skills I guess.