1.High precisionWind speed accuracy: 0.1m/s, range: 0.3m/s - 30m/s. "Wind Chill" will only appear at the bottom of the screen if the ambient temperature is below 10 C / 50 F. 2. [2 temperature units] You can choose Fahrenheit or Celsius, allowing you to keep the maximum/minimum/average/current data and view it later. Measures wind speed in 5 units: m/s, km/h, ft/min, knots, mph. 3. Digital LCD DisplayDisplays instant wind speed and temperature results. Great for backlighting in the dark. And the wind handle can be stretched. 4. [Multi-function] Low battery indication and automatic/manual shutdown to prolong battery life. Anemometers are widely used and can be flexibly used in many fields. Widely used in electric power, steel, petrochemical, energy-saving ventilation ducts, exhaust ventilation systems.