Ultrasonic Wind & Weather AntennaMaretron'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 get caught in the rigging.The WSO200 accurately measures wind speed and direction under a tilt of up to 30°, 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.The WSO200 mounts on a 1"-14 Standard Marine Mount.Features:Apparent wind speedApparent wind directionAtmospheric pressureAir temperatureRelative humidity