Digital Yacht WND100 Mast Head Unit 20M Cable [ZDIGWND100]WND100 Mast Head Unit & 20M Cable Wind Transducers have a tough life, experiencing extreme weather, constant movement and the occassional seagull, so it is no surprise that they can often fail. With this in mind, the WND100 wind sensor features an ultra tough design with UV and salt resistant plastics, Igildur bearings for exceptional life and corrosion resistance. Data transmission is via a super thin 20m digital cable providing fast update NMEA0183