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 data for maximum compatibility with legacy instrument systems and multi-function displays. Features: Ultra tough Mast Head Unit Igildur bearings for exceptional life and corrosion resistance UV, Salt water and high impact resistant plastics 12/24v DC operation with minimal power consumption Super thin 20m Mast Head cable Industry standard NMEA0183 Output for maximum compatibility Output at 5Hz (configurable)