Hello, so thanks to everyone for the posts. I played around and discoverred, that the best thing is to use the power modem TDA 5051. I am able to communicate between the two PIC via the power sockets. I build the remote controlled relay, simply I connected directly the serial line of TDA 5051 directly to PIC and it is working very well!!! So for those, who are interrested in to communicate via power lines use TDA 5051. Boban
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