3-Button Windlass Wireless Remote Control Allows Wireless Remote Up/Down Operation Of Any Lewmar Windlass, 5-Button Windlass & Thruster Remote Control Allows Wireless Port/Starboard Thrust Operations Of Any Lewmar Thruster, And Wireless Up/Down Operation Of Any Lewmar Windlass, Easily Retrofitted To Existing Installations, Kit Includes One Wireless Fob And One Receiver That Supports Up To Eight Remote Key Fobs. Additional Fobs Sold Separately. Include A Replaceable Battery, The Fobs Float And Are Waterproof To Ip67 (1 Meter Deep), Using Over 1 Billion Individual Codes, Our Proprietary Encryption Scheme Prevents False Triggering From Any Other Device Or Similar Fob, Fcc & Ce.