1、MEASUREMENT OBJECT: Multi functional anemometer can accurately measure wind speed, wind speed temperature, air cooling (display <0℃), can measure the maximum, average, or current wind speed. There are five units of miles, meters per second, kilometers per hour, ft per minute, knots 2、WIDE RANGE OF APPLICATIONS: Digital anemometers are ideal for home use, such as kite flying, drones, sailing, hanging taxiing. Also suitable for industrial applications such as HVAC duct airflow, fan manufacturing and other scenarios where wind speed is tested 3、PROFESSIONAL AND RANGE: Digital wind speed measurement range is 0~65mph(0~30m/s) (accuracy ±5%) and wind speed temperature is 14℉ or ‑10℃ ~ 45℃(±3.6℉, ± 2℃), the use of 7 blade wind rotor to improve accuracy 4、LIGHTWEIGHT AND COMPACT: The anemometer is equipped with a red protective case and lanyard(including battery), which has a certain protective effect and is easy to carry. With LCD backlight, also very convenient to use at night, and automatically shut down after 10 seconds without operation, saving power 5、EASY TO USE: Digital wind speed meter is easy to operate without complicated steps. For the first use, install the CR2032 battery(provided) and press the mode button to run Item Type: Digital Anemometer Material: ABS Battery Type: 1 x Button battery CR2032 Battery Capacity: 150mAh Operating Temperature: -10℃~45℃ (14℉~113℉) Operating Humidity: Less than 90%RH Storage Temperature: -40℃~60℃ (-40℉~140℉) Temperature Sensor: NTC negative temperature coefficient resistor Beaufort Scale: BFT (0~12) Low Battery Indication: Manual or auto power off Dustproof and Waterproof Level: IP67 Simultaneous Wind Speed and Wind Temperature Measurement: Yes ℃ or ℉ Temperature Unit Selection: Yes 1 x Digital Wind Speed Meter 1 x Battery 1 x User Manual