4 in 1 Portable Anemometer - Professional measurement of wind speed, wind temperature, air volume and wind chill (displays 0°C), MAX/Average/Current wind speed selection; 5 wind speed units m/s, ft/min, knots, km/hr, mph; Auto-off after 14 minutes of inactivity; The large backlit LCD screen provides clear readings, in MAX mode, the data memory function is not affected by shutdown. Accurate Digital Anemometer - The anemometer measures wind speed in the range of 0~30m/s (0~65 mph) (accuracy ±5%), wind temperature -10°C ~45°C/ 14°F ~ 113°F (±2°C, ±3.6°F), resolution 0.1m/s; a high-quality sensitive 6-leaf wind wheel is used to effectively reduce wind resistance and improve measurement accuracy. Multifunctional Anemometer - Ideal for commercial and home use. Such as drones, HVAC, sailing, shooting, kite flying and fan wind speed testing, knowing the weather forecast in advance to plan trips. Perfect for pilots, engineers, captains, sailors and other people interested in weather.