A dimmer switch system for dimming a load includes a master dimmer structured to be electrically connected to a power source and the load and to control dimming of the load by regulating power provided from the power source to the load, and at least one accessory dimmer structured to be electrically connected to the master dimmer via a traveler conductor. The master dimmer is structured to generate a first control signal on the traveler conductor during one of a positive or negative half-cycle of power from the power source. The at least one accessory dimmer is structured to generate a second control signal on the traveler conductor during the other of the positive or negative half-cycle of power from the power source.