✅【High Precision Wind Tester】The digital handheld air velocity tester KE-866A supports wind speed measurement from 0.8 to 40m/s with ±2% accuracy. It also provides real-time air volume readings from 0 to 999900 m³/min. Simply input the cross-sectional area, and the wind meter will immediately display the airflow in CFM or CMM units, without the need for manual calculations. ✅【Data Processing】This professional air flow gauge equipped with a USB cable and custom software, allowing you to connect the wind gauge to computer. You can monitor wind speed measurement data in real-time, and freely export and download wind speed readings through the computer for secondary data analysis. ✅【Easy to Use】The windspeed measuring instruments supports 5 wind speed units: m/s, Ft/min, Knots, Km/hr, Mph, 3 measurement modes: Maximum/Minimum/Real-time, and is equipped with backlit LCD display. The thoughtful design and simple operation make it easy for you to quickly get started. It supports one-click freezing/locking of wind speed readings, making it an ideal choice for overhead wind condition inspections. ✅【Multifunctional Anemometer】This anemometer comes with dual temperature sensors, capable of detecting wind temperature ranging from -10°C to 60°C/14°F to +140°F (switchable between Fahrenheit and Celsius) with 1.5°C/2.7°F accuracy, and can also detect 0~100% relative humidity. It is a practical wind tester suitable for outdoor activities such as drone flight testing, fishing, mountaineering, hiking, camping, and windsurfing. ✅【With Tripod Hole】The bottom of the anemometer has a standard 1/4 metal screw hole, which can be mounted on most tripods for long-term wind speed measurement, freeing up your hands.This portable AAA weighs only 200 grams and can test wind speed and balance airflow, suitable for HVAC, air conditioning dust collection systems, and vents.