Feature:1. High Performance: Professional wind direction sensor, better linearity, high accuracy, no dead spot, strong resistance to thunderstrike, easy to observe, stable and reliable.2. Accuracy And Reliable Design: 360° wind direction sensor adopts accuracy angle sensor inside, accurate measurement. Easy to install, designed with a fixed south line, easy to use.3. Premium Materials: This anemometer instrument uses low inertia ABS wind vane to respond to the wind direction, better dynamic characteristics, not easy to damage, bring you a better using experience.4. Working Principle: Wind direction anemometer is mainly used to measure the wind direction, its working principle is usually based on the rotating type, which can accurately measure the wind direction.5. Applicable Fields: This instrument is commonly used in meteorology, environmental monitoring, aerospace and other fields to understand the wind situation and make corresponding countermeasures.Specification:Item Type: Wind Direction SensorMaterial: ABSSize: Approx. 223 x 190 x 70mm / 8.8 x 7.5 x 2.8inGross Weight: Approx. 375g / 13.2ozPower Supply Voltage: DC9-30VOutput: RS485 for ModbusMeasuring Range: 0‑359° All RoundExtension Line Length: 0.8m / 2.6ftAccuracy: Full Range: ±3 DegreeResolution: Full Range: 1 DegreeStarting Wind Speed: ≤0.8m/sMaximum Power Consumption: 0.48WLoad Capacity: DC12V Power Supply, Current Output Impedance ≤350Ω, DC24V Power Supply, Current Output Impedance ≤900ΩVoltage Output Impedance: ≥1KΩOperating Environment: Temperature -35℃-60℃, Humidity ≤100%RH No CondensationWaterproof Level: IP64Cable Level: Rated Voltage: 300V 80℃Wide Application: Suitable for Wind Direction Measurement in Gardens, Greenhouses, Weather Stations, Ships, Docks, Aquaculture, Advertising Barriers, Meteorology, Marine, Environmental, Airports, Ports, Laboratories, Agriculture, And Transportation EnvironmentsInstallation Aperture: 3.2mm / 0.1inAerial Insert Diameter: 15mm / 0.6in (Recommended to Reserve 25mm for Wiring, Connect the Wires First, Then Install and Fix the Sensor)Wiring Method: Red Wire: Power Positive (Voltage, Current, Pulse), Power Positive (RS485)Black Wire: Power Negative (Voltage, Current, Pulse), A+ (RS485)Yellow Wire: Signal (Voltage, Current, Pulse), B- (RS485)Green Wire: Power Negative (RS485)Standard for ModBus RTU Communicating Protocol:First, the serial port format: Data bits 8 bits, stop bit 1 bit, parity bit none, default baud rate 9600bps, serial port software set to hex send and receive, two communicate intervals of at least 500ms or more, CRC in the manual for the parity bit, 2 bytes. Device address default address 2.Second, the communicate format:1. Write the device address (for example, write address 02)Send0006002000020810InstructionAddressWriteStarting addressNew addressCRC checkReturn0006002000020810InstructionAddressWriteStarting addressNew addressCRC checkReturn 01 86 ** ** then the configuration is not successful.2. Read device address (such as read address 2)Send0003002000018411InstructionAddressReadStarting addressRead PointsCRC checkReturn00030200020445InstructionAddressReadData lengthDevice dataCRC check3. Read register data such as read address 2 data)Send0203000000018439InstructionAddressReadStarting addressRead PointsCRC checkReturn02030200267D9EInstructionAddressReadData lengthDevice dataCRC checkOmnidirectional wind sensor returns data as 0x0026 converted to decimal as 38 , the wind direction value is 38 degrees, no decimal places. If it is an eight direction wind direction sensor, the return data refers to the table of eight direction calculation formula on page 1.4. Read device communicate baud rate (for example: read address 2 of the device baud rate equal to 9600)Send02030010000185FCInstructionAddressReadStarting addressRead PointsCRC checkReturn02030200027D85InstructionAddressReadData lengthDevice dataCRC checkBaud rate equal to data x 4800. return data 0x0002, then baud rate equal to 4800x2 = 9600.5. Write device communicate baud rate (for example, write baud rate 9600)Send02060010000209FDInstructionAddressReadStarting addressNew baud rateCRC checkReturn02060010000209FDInstructionAddressReadStarting addressNew baud rateCRC checkBaud rate equal to data x 4800. write data 0x0002, then baud rate equal to 4800x2 equal to 9600. supported baud rates are 4800, 9600, 14400, 19200, 38400, 57600, 115200. if write other unsupported baud rate, it will be automatically restored to 9600 after reboot. Returning 01 86 ** ** means the configuration is not successful.6. Switch the communicate protocol (such as switch to for ASCII private protocol)Send02060014000389FCInstructionAddressWriteStarting address01 for MODBUSCRC check03 for ASCIIReturn02060014000389FCInstructionAddressWriteStarting addressDataCRC checkIf 01 86 ** ** is returned, the configuration was unsuccessful.Change the protocol from 01 for MODBUS to 03 for ASCII private protocol.for Modbus CRC checking steps:1. Preset the 16 b