Versatile: The anemometer measures wind speed (0-30m/s, 0-5860ft/min, 0-55knots, 0-90km/h, 0-65mph). 12-level Beaufort temperature scale and air temperature detection (14F and 113F), buttons for easy switching of / units, supports wind chill display and time displays the maximum/average/current actual wind speed on the LCD screen. screen. The screen is more convenient than the 2-button service meter. Easy to use: Remove the yellow rubber protective cover and open the battery compartment of the anemometer, easier than other anemometers. Insert the battery (not included), press and hold "Mode" for 2 seconds to turn on the anemometer, measure wind speed and analyze ambient temperature. Auto/Manual Shutdown: Press any key to turn on the anemometer backlight for 12 seconds to make it easier to read in the dark. Press "Mode" + "SET" at the same time to turn off the anemometer, otherwise there will be no operation for 14 minutes. , it will automatically shut down. Versatile Wall-Mounted Sensor: This digital wind speed anemometer is ideal for industrial and home uses such as measuring HVAC speed meters, air conditioners and CPU temperatures. The mini anemometer is suitable for navigation, shooting, kite flying, drone wind speed testing or electrical and manufacturing industries. Handheld Knife: The anemometer is compact and lightweight, small enough to fit in your pocket, making it easy to carry and use. Portable wind speed tester with simple but detailed instructions. Wind speed specifications: Range: 0-30 m/s, 090 km/h 0-5,860 ft/min, 065 mph 0-55 knots Resolution: 0.1 m/s, 0.3 km/h 19 ft/min, 0.2 mph, 0.2 knots Threshold: 0.1 m/s, 0.3 km/h, 39 ft/min 0.2 mph, 0.1 knots Accuracy: +/-5% Air temperature specifications: Thermometer: NTC thermometer Range: -10C to 45C (14F to 113F) Storage temperature: -40C to +60C, -40F to 140F Resolution: 0.2C, 0.36F Accuracy: 2, 3.6F Current consumption: about 3mA Working humidity: 90%RH Size: 49*21*112.1mm Weight: 98 grams This product does not contain batteries. Note: The data are all measured manually. Due to the difference in light and display, please allow an error of 1-3cm. Please refer to the actual object received.