Anybody tested the 2 wire bus from Cherry Semiconductors ?? They have a line of ICs which act as remote I/O in a two wire bus. Seems that they are used in alarm systems, but probably good for a home automation proyect. I have asked for literature to the local distributor so for the moment no idea on bus lenght, topology, etc. The only info was for a CS-212, which is a 2in+2out device. It was bad news......must purchase 1000 pieces !! But this is something one usually gets from local distributors. They don't want to keep ANY stock at home. :( Regards Luis Fernandez Cormenzana RadioBit Sistemas, S.L. Vehicle fleet control systems Patrol presence controllers Fax/Tel:+34-6-585 64 57 +34-6-680 26 33 e-mail: radiobit@dragonet.es http://www.dragonet.es/users/radiobit