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If you have 2 phases you need a phase coupler, signal amp or repeater
Insteon has the wireless bridge (nice)
UPB needs a coupler too!
- Any system that uses the power line to communicate and has to deal with 2 or more phases has to have a way of coupling the phase so signal can be sent on one side and reach the other. This is true of X10, Insteon and UPB. Z-Wave does not use the power line to communicate, it uses wireless signals.