This means my cat flap operated via RFID could be back on the agenda. http://www.murata.eu/mm/2007.html Of course trying to get hold of just one to play with will be near impossible I suppose. Colin -- cdb, 3/07/2009 -- colin@btech-online.co.uk -- http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist