The wind speed sensor is a cup-type anemometer measures wind speed by closing a contact as a magnet moves past a reed switch. As per the datasheet, a wind speed of 2.4km/h (1.4912 mph) causes the switch to close once per second. The anemometer switch is connected to the inner two conductors of the RJ 11 cable shared by the anemometer and wind vane (pins 2 and 3).

The Anemometer is connected to the ESP32 GPIO pin 14 and GND. After that, all we need to do then is to monitor for button presses which is pretty straightforward. We can use the pin interrupts method to monitor the button press ( tips). When the reed switch closes the circuit (pressing the button), it triggers a software event.

If you want to make your own wind sensor, then read this nice Instructable

These are few more 3D printed Wind Sensors:

Wind Speed Gauge