【Easy to Read with Backlit Display】TopTes Anemometer is a handheld wind meter to display readings on a 2.26" big LCD screen. Long press the backlight button to turn on a backlight, making it easy to view anywhere. Use it to determine local weather conditions for outdoor activities such as skiing, sailing, shooting, windsurfing, drone flight, kite flying, boating, etc. This wind speed device will provide a reading to determine when and where a storm is coming 【Quick & Accurate, Humidity & Temperature】The TS-301 wind speed meter is designed with easy-to-rotate fan blades with a high-precision temperature and humidity sensor, which helps to measure the relative humidity and temperature of the current environment. This is suitable for those learning about meteorology or getting long-term data 【Anemometer with 6 Measuring Units】 TopTes Wind speed measuring device is designed with easy-to-rotate fan blades; it measures wind velocity in the 6 units: * Feet per minute (ft/m) * Feet per second (ft/s) * Miles per hour (mph) * Knots (knots )* Kilometers per hour (km/h) * Meters per second (m/s) * Value of wind velocity x10. Use it to check the airflow for indoor surroundings like HVAC, vents, dust collector, etc. 【Lightweight, Easy to Use】This Anemometer is easy to hold and use one-handed. It is compact, lightweight, and easy to carry in the pocket when wen you o for outdoor activities such as hiking, biking, and running. By default, the TS-301 wind gauge will automatically shut down after 10 minutes of non-use to help save energy 【What in the Box】1x TS-301 Digital Anemometer, 3x AAA Batteries, 1x User Manual, 1x Carry Pouch. TopTes Wind Speed Meter with a 3-year Warranty and lifetime technical support. Please feel free to contact us if you have any questions or concerns