1. Introduction
This is a professional digital anemometer with stable performance, safety, and reliability. It is widely used in wind energy, meteorology, industry, agriculture, hydrology and water conservancy, environmental protection, highways, airports, and ports, etc. This device measures wind speed, temperature, and humidity simultaneously.

2. Safety Information
Considerations
- Do not touch the fan blade with force.
- Do not store or operate the instrument in areas with high temperature or humidity.
- In use, do not let strong light directly shine on the fan, to avoid measurement errors.
- Avoid violent vibration.
- Remove the battery before storing the instrument for a long time.
3. Product Overview
Display Screen Symbols
| Symbol | Description |
|---|---|
| H | Data hold |
| MAX | Maximum value |
| MIN | Minimum value |
| AVG | Average value |
| °C | Celsius |
| °F | Fahrenheit |
| %RH | Humidity unit |
| m/s, km/h, mil/h, ft/m, ft/s, knots | Units of wind speed |
| Wind speed simulation bar | Graphical representation of wind speed |
| Battery icon | Low battery indicator |
| Power icon | Automatic shutdown indicator |
Components





4. Setup
Battery Installation
The device requires 3 x 1.5V AAA (LR03) batteries (not included).
- Unscrew the battery cover on the back of the device.
- Open the battery cover.
- Remove any old batteries from the battery compartment.
- Install new batteries correctly, observing the positive and negative marks on the bottom of the battery compartment.
- Reinstall the battery cover and fasten the screws to secure it.
5. Operation
Wind Speed Measurement
- Press the Power button to turn on the device.
- Hold the anemometer and ensure the fan plane is aligned vertically with the direction of the airflow for accurate measurement.
- The display will show the wind speed, wind temperature, and wind humidity simultaneously.

Data Hold
To freeze a displayed reading, press the H/ button (less than 1 second). The "H" icon will appear, and the most recent reading will be held on the display. Press the H/ button again (less than 1 second) to exit this mode and return to normal measurement.
Backlight Control
Press and hold the H/ button for more than 2 seconds to enable or disable the backlight function.
MAX/MIN/AVG Function
Press the MAX/MIN button (less than 1 second) to activate the maximum function. Subsequent presses will cycle through maximum, minimum, and average values. Long press the MAX/MIN button (more than 1 second) to return to normal measurement.
Temperature Unit Selection
Press the °C/°F key to switch between Celsius (°C) and Fahrenheit (°F) temperature units.
Wind Speed Unit Selection
Press the UNIT key to select the desired wind speed unit from m/s, km/h, mil/h, ft/m, ft/s, or knots.

Auto Shutdown Function
When the device is powered on, the automatic shutdown function is enabled by default. It will automatically shut down after 10 minutes of no operation.

- To cancel the auto-off function: Press and hold the Power button before turning on the meter, then press the Power button to turn on the device. Release the Power button after the meter is turned on. The auto-off function will be canceled.
- To restore the auto-off function: Simply turn on the power again.
- When auto-off is active, the display will show a power icon symbol. When canceled, it will not show.
Product Demonstration Video
6. Specifications
General Specifications
| Feature | Description |
|---|---|
| Display | LCD, Max display 9999 |
| Air velocity range | 0.70~30.00 m/s |
| Sampling rate | One reading per 0.5 Sec. |
| Sensor | Air velocity/flow sensor: angled vane arms with bearing |
| Max/Min/Avg | Minimum, maximum, average measurement |
| Data hold | Freeze reading |
| Operating conditions (Temperature) | 0~40°C |
| Operating conditions (Humidity) | <80%RH |
| Storage conditions (Temperature) | -10~50°C |
| Storage conditions (Humidity) | <80%RH |
| Auto power off | 10 minutes |
| Power | 3 x 1.5V AAA (LR03) batteries |
| Certifications | CE, FCC, RoHS |
Accuracy Specifications
The accuracy applies within one year after calibration. Reference condition: the environment temperature 18°C to 28°C, the relative humidity is no more than 80%.
| Measurement | Range | Resolution | Accuracy |
|---|---|---|---|
| Air velocity (m/s) | 0.70~30.00 | 0.01 | < 1.00m/s: ±0.7 m/s 1.00~30.00 m/s: ±(2.0%+ 0.5m/s) |
| Air velocity (km/h) | 2.50~108.0 | 0.01~0.1 | |
| Air velocity (mil/h) | 1.50~67.10 | 0.01 | |
| Air velocity (ft/s) | 2.30~98.50 | 0.01 | |
| Air velocity (ft/m) | 137.0~5900 | 0.1~1 | |
| Air velocity (knots) | 1.30~58.30 | 0.01 | |
| Temperature | -20.0°C~60.0°C (-4.0°F~140.0°F) | 0.1°C/°F | 0.0~45.0°C: ±1.0°C others: ±1.5°C |
| Humidity | 0.0% ~99.9%RH | 0.1%RH | 20%~80% RH: ±5.0%RH others: ±6.0%RH |
For a complete list of specifications, please refer to the full user manual PDF.
7. Maintenance
Battery Replacement
When the meter shows the low battery symbol, please replace the batteries promptly. Follow the steps in the Setup section for battery installation.
Cleaning
- To avoid damaging the case, do not use corrosive agents or solvents to clean the instrument.
- Wipe the shell regularly with detergent or a damp cloth and detergent.
8. Troubleshooting
If you encounter any issues not covered in this manual, please refer to the full user manual PDF or contact customer support.
9. Warranty and Support
This product comes with a 24-month manufacturer's limited warranty for defective items (excluding items damaged and/or misused after receipt). Accessories come with a 3-month warranty.
For further assistance, please refer to the official GVDA website or contact their customer support.
A detailed user manual is available in PDF format: View User Manual (PDF)