use pin 0 (RX) and 1 (TX) for wireless connection

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!