... for plant, electric power, harbor, factories and mines, wind generator etc large mechanical equipments,IP65 Major functions & featuresAirspeed ... sensor, providing good corrosion resistant, strong anti-wind ability, up to 16 scale.Convenient installation and adjustment ... .4+0.05 actual wind speed)m/sToggle speed<0.5m/sAnti-wind strengthMax. wind resistance:≥60m/sSensor output4mA~20mA ...