The wind speed sensor is composed of a shell, three wind cups and a circuit module, which is made of aluminum alloy material.

The whole sensor has a high strength, weather resistance, corrosion resistance and water resistance, will be to ensure the long-term use of the instrument, and the accuracy of the wind speed collection.It is very suitable for outside measurement.

• Small size, aluminum alloy material, high strength
• Exquisite appearance, high precision measurement
• Long signal transmission distance, strong anti-interference ability
• Low power consumption, Wide range, good data information
• Easy to installation , easy to carry

The unit uses +12 to 24 V and gives an output of 4 - 20mA

If you want to connect it to a microcontroller you need to connect a resistor between the signal out and ground to get a voltage out. If you use a 250R resistor it will give 1 to 5V out to use with a microcontroller.

According to the datasheet the windspeed will be 0 to 30 m/s for the 4 - 20 mA output, thus with the resistor it will be 1-5V for 0 - 30m/s wind.

1. Datasheet - CMU 3 CUP ANEMOMETER 4-20MA