MULTIFUNCTIONAL WIND METER: designed to measure wind speed (0-30 m/s, 0-5860 ft/min, 0-55 knots, 0-90 km/h, 0-65 mph) with 12 beaufort scales, and detects air temperature (14F and 113F), easy to switch / units by pressing the button without tools, supports wind chill indication , displays the max/average/current air speed on the LCD screen in real time, more convenient than a 2-button anemometer. EASY TO INSTALL BATTERY AND USE Remove the yellow rubber protective cover, then open the battery door, it's easier than other anemometers. Put a CR2032 battery (included), turn on the wind speed anemometer by pressing "Mode" for 2 seconds to measure the wind and analyze the environment to do activities. Backlight and automatic shutdown /manual: press any key to turn on the wind meter backlight for 12 seconds, convenient to read in a dark place, press "MODE" + "SET" simultaneously to turn off the wind meter, or no operation for 14 minutes, it will automatically shut off. MULTI-PURPOSE WIND DETECTOR- This digital wind speed anemometer is perfect for industrial and household applications, like HVAC velometer speed measurement, air conditioner and processor temperature. The mini anemometer for sailing, shooting, hang gliding, drone wind speed testing, or food and industrial manufacturing. PORTABLE ANEMOMETERThe wind speed thermometer is compact and lightweight design, small enough to put in pockets, easy to carry and use. Handheld wind speed tester with a simple yet detailed manual. Do not hesitate to if you have any questions.