Patent ID: 8339054

Claim:
A switch comprising: a controller for controlling output to a load; a first terminal for connecting to a common line; a second terminal for connecting to ground; a first traveler terminal for connecting to a corresponding third traveler terminal of another switch connected in a 3-way circuit configuration; a second traveler terminal for connecting to a corresponding fourth traveler terminal of the other switch; a light source connected in series between the first traveler terminal and the second traveler terminal, the light source configured to illuminate according to a state of the load; a first power circuit configured to receive a first input from the first traveler terminal, and output a first power derived from the first traveler terminal to the controller via a first power input; and a second power circuit configured to receive a second input from the second traveler terminal, and output a second power derived from the second traveler terminal to the controller via a second power input, wherein at least one of the first and second power circuits comprises a half-wave rectifier circuit.