Features Smart Testing: This digital handheld anemometer can measure wind speed,wind temperature, wind force and so on.wind speed meter can be used for air conditioning wind speed testing, environmental wind speed testing, fan wind speed testing, micro wind speed testing and so on High Accuracy:This anemometer wind speed sensor is able to test the maximum value, current value as well as calculating the average value, the air flow tester tool has higher accuracy for working. Practical Use:This wind speed meter gauge is designed to have 5 units of m/s, km/h, ft/min, knots, mph, also has other functions such as auto power off, low power reminding and more. Portable and Convenient:There’s a metal threaded hole on the bottom of the digital anemometer, so you can fix it on a tripod for continuous wind guages. To set your hands free when you fly drones, rc planes, wings, helicopters and quads, long distance shooting. Easy to Read:Wind speed anemometer with backlight lcd display, can be used in low light conditions, support auto/manual power off. Specification: Item Type: Anemometer Material: ABS Battery Model: 1 x button battery CR2032, shipped with matching battery. Battery capacity: 150mah Thermometer: NTC Thermometer Working Temperature: -10℃~45℃, that is, 14℉~113℉. Working Humidity: Relative Humidity Less Than 90% Storage Temperature: -40℃~60℃, that is, -40℉~140℉.  Package List:1 x Anemometer1 x Lanyard1 x Protective Cover1 x Battery1 x Accessory2 x User Manual Package List 1 x Anemometer 1 x Lanyard 1 x Protective Cover 1 x Battery 1 x Accessory 2 x User Manual