Compatibility of the alarm siren with the EXTA FREE/LEFE ZAMEL system

I'm trying to find on the web whether it is possible to connect an alarm siren to the EXTA FREE or EXTA LEFE systems, activated in the event of violation of the RCK-01 window opening sensor or the RCR-01 motion sensor activity. Of course, all sensors would be connected to the EFC-01 central unit. But I can't find anything. It looks like ZAMEL does not produce something like that at all.
You would have to do some kind of modification in that case - Obviously connecting the siren by radio, without cables. I don't think this is straightforward. Any ideas?