The shell is made of high-quality material with high hardness and external electroplating and spray plastic treatment, which has good anti-corrosion and anti-erosion performance. The bottom cable is adopted to completely eliminate the aging problem of the aviation plug rubber pad, and it is waterproof after being used for a long time. High-performance imported bearings, low rotational resistance, accurate measurement, small size and light weight, easy to carry and assemble. Widely used in the measurement of wind direction in greenhouses, environmental protection, weather stations, ships, wharf, breeding and other environments. Model Number: Wind Speed Sensor Type: Anemometer DC Power Supply (Default): 5-30V DC Accuracy: ±0.3m/s Measuring Range: 0-70m/s size:160mm Material:plastic colour:black Package Contents: 3 x Wind speed sensor 3 x cable 3 x Mounting screw kit Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.