Thanks for answering.
I'll try what you posted.
The modul can be seen at www.conrad.at --> Article-Nr.: 130428 - 62
This is a better description http://www2.produktinfo.conrad.com/datenblaetter/125000-149999/130428-an-01-ml-Sender_Empfaenger_Modul_Set_de-en-fr.pdf
Bye!