Leviton WSP05-80 3-Wire Relay Receiver, 240V, White Easy-to-use: Programs in seconds; run zero switch-leg or traveler wires Reliable range: Each unit stores up to 30 Transmitter IDs; error checking ensures Receiver only responds to appropriate Transmitters on all packet transfers Save energy: Connect the Receiver to a LevNet RF Sensor or program all lights to respond to a single master switch Simple wireless controls: Architectural lighting, load shedding, and manual-ON/OFF and auto-OFF controls Control the way you want it: Control the 3-Wire Relay Receiver with a variety of devices  Wireless Self-Powered switches, Sensors, and more