Repeater systems and methods for coupling a home automation control signal from a first power line operating on a first phase to a second power line operating on a second phase are provided. A power line control repeater includes a power line control signal transceiver, a wireless signal transmitter, a wireless signal receiver, and a processor. The processor is configured to instruct the transmitting component to transmit wireless signals based on power line signals detected by the power line control signal transceiver and further configured to identify wireless signals received at the wireless signal receiver from a similarly configured repeater and to instruct the transceiver to modulate the power signal based on the received signals. A system includes two repeaters in wireless signal communication.