Enerwave ZW500D-3K Z-Wave Wireless 3-Way Dimmer Switch Kit, Z-Wave Dimmer ZW500D and Auxiliary Switch ZW3K with 2 Screwless Wall Plates and 2 Regular Wall Plates, NEUTRAL WIRING REQUIRED, White Replace Wall Switch or Dimmer to Enable Wireless Dimming and ON/OFF Control 3-Way Application Allows Light Control From Multiple Locations Manually or With a Smart Phone, Internet Connected Tablet, or PC/Mac Create a Double Tap Z-Wave Association to Turn On or Off Multiple Devices at the Same Time Control One Light / Load from Two Locations, such as a Staircase, Hallway, and Multi-Entrance Room. **NEUTRAL WIRING REQUIRED** 120VAC; Air-Gap switch meets UL requirements; LED indicator; 100 Range