Feature: 1. STRONG MATERIAL: The wind cup is made of excellent ABS material, with high strength, small starting wind speed, and good erosion resistance 2. INTERFERENCE RESISTANT: The wind speed sensor has strong prevent lightning interference ability, small and lightweight, easy to carry and assemble 3. WIRING MODE: The wind speed monitoring sensor is compatible with two cable outlet modes, including bottom cable outlet and side cable outlet 4. WEATHER RESISTANT: Wind speed sensor anemometer possess strong pressure resistance, suitable for all kinds of harsh environment, with strong wind resistance 5. EQUIPPED WITH EXTENSION CABLE: The wind speed sensor connection extension line is 0.8m long, the interface has a sealing washer design, waterproof Specification: Item Type: Wind Speed Monitoring Sensor Material: ABS Size: Approx. 158 x 180 x 70mm / 6.22 x 7.09 x 2.76in Power Supply Voltage: DC9-30V Signal Output: 4-20mA Measurement Range: Wind speed 0~45m/s Extension Line Length: Approx. 0.8m / 2.6ft Accuracy: ±(0.5+0.02V)m/s(V represent real time wind speed value) Resolution: 0.1m/s Startup Wind Speed: ≤0.8m/s Maximum Power Consumption: 0.48W Load Capacity: DC12V power supply, current output impedance ≤350Ω DC24V power supply, current output impedance ≤900Ω, voltage output impedance ≥1KΩ Working Environment: Temperature: -35℃~60℃, Humidity: ≤100%RH non condensing Protection Level: IP64 Widely Used In: Greenhouses, environmental protection, ships, docks, aquaculture, advertising gate barriers, weather, marine, environmental, airports, ports, laboratories, industrial, agricultural and traffic environments for wind speed measurement Formula: 4-20mA: F=(I-4)/16xA+B F: Wind speed, m/s; I: Sensor output current value, mA; A: Sensor range width(range upper limit minus lower limit); B: Minimum value of sensor range(lower limit of range); Wire Connection Method: Red Output Signal(voltage): Power supply positive Black Output Signal(voltage): Power supply negative Yellow Output signal(voltage): Signal Distribution Diameter: Approx. 63mm / 2.48in Mounting Hole Diameter: Approx. 3.2mm / 0.13in Aerial Plug Diameter: Approx. 15mm / 0.59in(recommended to reserve 25mm for wiring, wire connection first, then install and fix the sensor) Troubleshooting: 1. The wind blade does not rotate smoothly and has a large delay. There may be foreign objects or jamming in the bearings due to long term use. Please return the sensor to the company for processing; 2. The instrument display value is incorrect. May be due to wiring problems or communication port failures that prevent obtaining correct data. Please check whether the wiring is correct and secure, whether the port is occupied, and whether the port settings are correct; Weight: Approx. 272.00g / 9.59oz. Package List: 1 x Wind Speed Monitoring Sensor Note: 1. Please check the packaging for integrity and verify that the product model matches the selection; 2. Do not connect the wires while they are powered. Only power on after confirming the connections are correct; 3. The length of the sensor wire may affect the product output signal. Do not alter the product randomly while using it. If there are changes needed, please contact the manufacturer; 4. Sensors are accurate instruments. Users should not disassemble them, allow incisive objects or erosive liquids to come into contact with the sensor surface to avoid damage to the product; 5. Please keep the calibration certificate and the certificate of conformity. Return them together with the product for repairs; 6. Do not plug or unplug while the power is on.7. Customers need to provide their own screws and nuts.