My gripe with compose is that the signals only work on the circuits that have compose. So if you have overhead lights on one circuit and one lamp on a separate circuit you have to dedicate a compose circuit just to handle one lamp. The idea behind X10, which is that, you can add devices anywhere. Compose takes care of noise and signal strength issues quite well, but in order to get it to what a good X10 system does, you need to add it to every circuit. In most places that could be 30 or so breakers. I like the idea of compose, but find that a well-done standard X10 system with a good coupler repeater, quality switchs and noise filtering works just as good.

Bill
www.homeautomationnet.com