Item Type: Digital Anemometer Material: ABS Battery: 1 x 9V battery, shipped without battery. Function: For wind speed and temperature measurement. Temperature Sensor: NTC negative temperature coefficient resistance. Operating Temperature: -10-45℃, that is, 14-113℉. Operating Humidity: ≤ 90% RH Storage Temperature: -10-50℃ 1,Smart Testing: This anemometer can be used to test wind speed, wind temperature, wind force and so on, meanwhile the handheld wind speed meter is easy to operate. 2,High Accuracy: Able to test the maximum value, minimum value as well as calculating the average value, the air flow CFM tester has higher accuracy for working. 3,Broad Utility: Can be used for air conditioning wind speed testing, environmental wind speed testing, fan wind speed testing, micro wind speed testing and so on. 4,Clear Display: Equipped with a large LCD screen, the wind speed sensor with backlight is very clear to read, thus greatly improving the overall work efficiency. 5,Easy Carrying: Comes with a compact size and a light weight as well, the wind speed sensor anemometer is very convenient to carry for indoor and outdoor uses.1 x Digital Anemometer 1 x Storage Bag 1 x User Manual Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement.