How to do wind speed measurement of GVDA 3 in1 Digital Anemometer GD155 Portable Wind Speed Sensor Large Screen With Temperature & Humidity Environmental Tester
1. Press the
button to turn on the power.
2. Hold the anemometer and let the fan plane of the anemometer align vertically with the wind direction of the airflow for measurement.
3. The display will show the wind speed, wind temperature and wind humidity at the same time.

