Maretron's outdoor weather station measures wind speed and direction air temperature barometric pressure and relative humidity. The wind measurement is performed using ultrasonic sensors which means there are no moving parts to wear out or to get caught in the rigging. The WSO200 accurately measures wind speed and direction under tilt of up to 30 Degree making it ideal for sail as well as power conditions. When used with Maretron's SSC300 compass and a display such as Maretron's N2KView® vessel monitoring system or Maretron's DSM570 color graphics displays the user will be able to view both apparent and true wind speed and direction as well as dew point and wind chill factor. Weather Receiver Antenna Precise Wind Speed And Direction Is Easily Achieved Under Tilt Of Up To 30 Degree Marine Grade Ultrasonic Weather Station That Accurately Measures Wind Speed And Direction Air Temperature Barometric Pressure Relative Humidity Wind Chill Factor Heat Index And Dew Points Not Affected By The Common Issues Such As Bearing Wear Salt And Dirt Build-Up Or Bird Perching That Can All Result In Failure Or Data Inaccuracy Mounts On A 1 Inch To 14 Standard Marine Mount And Is Waterproof To IP67 Standards