EATON RF9517DW ASPIRE RF Accessory Switch Compatible with aspire RF Switch (RF9501, RF9518) for wireless 3-way control eliminating the need for traditional 3-way wiring (up to 5 locations) Neutral wire required for installation Z-Wave Certification ID: ZC08-13010010 Can be associated with up to 5 other devices Electro-mechanical Push Button for on/off operation