4-in-1 Portable Anemometer - Professional measurement of wind speed, wind temperature, air volume, and wind chill (displays < 0°C), selectable MAX/Average/Current wind speed; 5 wind speed units: m/s, ft/min, knots, km/hr, mph; automatic shut-off after 14 minutes of inactivity; large backlit LCD screen provides clear readings; in MAX mode, the data memory function is unaffected by power-off. 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-blade wind wheel is used to effectively reduce wind resistance and improve measurement accuracy. Multifunctional Anemometer - Ideal for commercial and home use. Use it for drones, HVAC systems, sailing, shooting, kite flying, and fan wind speed testing. Know the weather forecast in advance to plan trips. Perfect for pilots, engineers, captains, sailors, and others interested in