Product Description Our wind direction sensors is mechanical rotate sensor, cup turns round once be blown. Digital circuits capable of strong RFI & EMI resistance and automatic temperature compensation are installed inside the sensor, it outputs voltage and current signals by electromagnetic induction, the value and horizontal wind speed are linear relation. Sensor external parts all are made of alloy material and finish by surface powder coating, featured with water proof, corrosion resisting. Inside and turning position have sealing rings with nice sealing function, stop water, salt fog and dust getting in. Parameter: Testing range 0~36 Start wind speed 0.8m/s Resolution 22.5 Accuracy ±3 Working Environment Temperature: -20C~+85C Humidity 95%RH Output 0-5VDC 4-20mA Resistance for current output 250 Working Voltage 12~30VDC (common 24VDC) Limit wind speed Max: 70m/s 30min Electrical connection M12 Environmental Protection IP65 Features detail Strong RFI & EMI resistance and automatic temperature compensation High sensibility, high precision, high frequency response and permanent stability Excellent resistance against impact, overload, shock and erosion