The 3-Button Windlass Remote Kit is easily retrofitted to existing installations and includes a replaceable battery. The fob floats and is waterproof to IP67 (1 Meter deep). Using over one billion individual codes, its proprietry encryption scheme prevents false triggering from any other device or similar fob. The kit includes a Receiver that supports up to eight remote key fobs (additional fobs sold separately). Allows wireless remote operation (up/Down) of any solenoid switched windlass. FCC & CE certified Kit includes one wireless fob and one receiver