1、High Strength: Integrated wind direction sensor, assembled with aluminum alloy accuracy machined parts, aluminum alloy shell with high strength, light weight, easier to install, suitable for outdoor use. 2、High Performance: The wind speed part adopts the traditional three wind cups structure, the wind cup uses imported ABS material, high strength and better start; large range, great linearity, convenient observation, stable and reliable. 3、Professional: The wind part is a professional meteorological instrument used to measure the horizontal wind direction of the wind, its internal use of accuracy angle sensors, and the use of low inertia wind vane response to wind direction. 4、Working Principle: Professional anemometer, when the wind direction changes, the tail rotates the shaft rod to drive the sensor magnet, and the angle sensor senses the magnetic pole orientation change. 5、Multiple Installation And Waterproof: Wind speed direction sensor with special fixing accessories design, can be installed horizontally or vertically, 4 installation methods, easy to use. External rain cover, built in airtight ring, IP64 waterproof and dustproof. 1 x Wind Speed Direction Sensor1 x Hex Wrench Item Type: Wind Speed Direction SensorMaterial: ABS, Aluminum AlloySize: Approx. 458 x 232mm / 18 x 9.1inGross Weight: Approx. 1575g/ 3.5lbMeasuring Object: Wind Speed, Wind DirectionSignal Output: RS485 for Modbus ProtocolMeasuring Range: Wind Speed 0-70m/sCable Length: Approx. 5.2m/ 17.1ftAccuracy: Wind Speed: ±( 0.3+ 0.03V)m/s (V represents real time wind speed value), Wind Direction: ±3°Resolution: Wind Speed: 0.1m/s, Wind Direction: 1°Start Wind Speed: ≤ 0.5m/sMaximum Power Consumption: 0.9WLoad Capacity: DC12V Power Supply, Current Output Impedance ≤350Ω; DC24V Power Supply, Current Output Impedance ≤900Ω Operating Environment: Temperature: -35°C-60°C Humidity: ≤100%RH Non CondensingGuard Level: IP64Widely Used: Meteorology, Marine, Environmental, Airport, Port, Laboratory, Industry, Agriculture, Traffic, etc.4 Installation Methods: 1. Horizontal bottom mounting, wind direction must face upward 2. Horizontal top mounting, wind direction must face upward 3. Vertical side mounting, wind direction must face upward 4. Pole mounting, wind direction must face upwardWire Connection Method:Red Wire: Power Positive PoleBlack Wire: A+Yellow Wire: B-Green Wire: Power Negative PoleStandard for ModBus RTU Communicate Protocol:Serial Port Format: 8 data bits, 1 stop bit, no parity, default baud rate 9600bps, serial debugging software set to hex send and receive, minimum interval between two comms at least 500ms, CRC in the manual is the parity, 2 bytes. Default device address is 1.for Modbus CRC Check Steps: 1. The preset 16 bit register is hexadecimal FFFF, is called CRC register; 2. The first 8 bit data is different from the lower part of the CRC register or put the result in the CRC register; 3. Move the contents of the register to the right one bit (towards the low), fill the highest bit with 0, and check the lowest bit; 4. If the lowest position is 0: repeat step 3 (shifting again) If the lowest position is 1: the CRC register is XOR with polynomial A001 (1010 0000 0000 0001); 5. Repeat steps 3 and 4 until you move to the right 8 times, so that the entire 8 bit data has been processed; 6. Repeat Step 2 to Step 5 to process the another 8 bit data.The resulting CRC register is the CRC code (the resulting CRC code is low before high after).Troubleshooting: 1. Wind blade rotation is not great, hysteresis is large. Due to long term use, there are foreign bodies or stuck in the bearing. 2. When analog signal or RS232, RS485 output, the instrument display value is incorrect. The correct data cannot be obtained because the cable connection is faulty or the comm serial port is faulty. Check whether the cable connection is correct and secure, whether the serial port is occupied, and whether the serial port settings are correct.