Features Quick measurement: The air flow velocity measurement thermometer device is sensitive and accurate, providing rapid measurement for environmental condition analysis. The wind speed gauge has an LCD backlight design, which is convenient for you to operate and read data under low light conditions. LCD display with backlight: Handheld digital anemometer can not only provide you with maximum/minimum wind speed measurement, but also provide LCD display with backlight, data retention function and automatic shutdown function. 500 data storage: Hot wire anemometer comes with a bag for easy carrying. Digital anemometer can be used for 500 data storage, data export to a computer or online test (provide PC software). Application: LCD wind speed gauge needs to be powered by 4 x 1.5V LR03 AM4 AAA batteries, which are not included in accessories. The wind speed meter is very suitable for outdoor activities such as model airplanes, sailing, surfing, and gliding. Dimensions: Anemometer size is approximately 168 x 72 x 37 mm / 6.61 x 2.83 x 1.46 inches, sensor size is approximately 30.5 x 310 mm / 1.2 x 12.2 inches, tensile sensor size is approximately 30.5 x 2000 mm / 1.2 x 78.74 inches, and weight is approximately 1026g Package List