Proof-of-concept code fragments for a setup with a LPCXpresso (LPC1769 Rev B) and a TI ADF 7021 DBZ2 transceiver board to sniff and inject messages into a ABUS Secvest 2WAY burglar alarm system. Please read http://sitsec.net/blog/2012/05/10/reverse-engineering-the-abus-secvest-wireless-intruder-alarm-systems-radio-protocol/ for more details.