Wind speed and wind direction sensor (or anemometer) common classification and USES include:Wind speed sensors are generally classified into mechanical (mainly including propeller type and wind cup type) wind speed sensors, hot air wind speed sensors, pitot tube wind speed sensors and ultrasonic wind speed sensors. Wind direction sensors mainly include mechanical wind direction sensors and photoelectric wind direction sensors (which provide digital or analog output of wind direction information and are applied in meteorological stations, meteorological satellites, aviation navigation and weather forecasting). Ultrasonic wind direction sensors and magnetic wind direction sensors (determine wind direction by measuring changes in the magnetic field.) It can provide stable and accurate wind direction information for use in maritime navigation, weather observation and Marine research.