1、CHARACTERISTICS: Wind direction sensor is characterized by good linearity, high accuracy, no dead spot, no fear of lightning strike, and easy observation, more stable and reliable use. Users can know the wind direction through the sensor and make corresponding decisions and countermeasures. 2、ALL AROUND: The internal precise angle sensor is able to realize all round 360° wind direction monitoring. Users can get a full range of wind direction information, ensuring the comprehensiveness and accuracy of the data. 3、PREMIUM MATERIAL: Made of low inertia ABS material with good dynamic characteristics. The premium material made it has stable performance and long lasting reliability, and can work well in various environments. 4、FUNCTION, WORKING PRINCIPLE: It is mainly used to measure the direction of the wind, adopting the rotary type, which can accurately measure the direction of the wind. 5、WIDELY USED: It is suitable for meteorology, environmental monitoring, aerospace and other fields. Besides it can also be used for wind direction measurement applied in gardens, greenhouses, environmental protecting, weather stations, ships, wharves, aquaculture, advertisement gates, meteorology, marine, environment, airports, ports, laboratories, industry, agriculture and transportation environments. 1 x Wind Direction Sensor Item Type: Wind Direction SensorMaterial: ABSWeight: Approx. 385g / 13.6ozProduct Size: Approx. 223x190x70mm / 8.8x 7.5x 2.8inOutput: 4-20mAExtension Wire Length At Connection: 0.8m / 2.6ftAccuracy: Omni Directional: ± 3°Resolution: Omni Directional: 1°Starting Wind Speed: ≤ 0.8m/sMaximum Power Consumption: 0.48WOperating Environment: Temperature -35℃-60℃Humidity: ≤100% RH without condensationPrevention Grade: IP64Mounting Hole Diameter: 3.2mm / 0.13inCalculation Formula:4-20mA: F=(I-4)/16x359Attention:F: Indicates the wind direction angle value, unit: °.I: Sensor output current value, mAWiring Methods (Wire Sequence) Wire color Output signal (current)  Red Power positive Black Power negative Yellow SignalTroubleshooting : 1. The wind blades do not rotate properly, and the hysteresis is big. There are foreign objects or jammed in the bearing due to long term use. Please send the sensor back to the company for processing. 2. Analog signal meter display value is not correct. Possible wiring problems or communication serial port failure caused by the inability to obtain the correct data. Please check whether the wiring is correct and firm, whether the serial port is occupied, and whether the serial port setting is correct. 3. If it is not the above reasons, please contact customer service.