[Precise Wind Meter] Anemometers measure wind speed in 5 units: m/s, km/h, ft/min, knots, mph, with 12 beaufort scales, and detect air temperature (14 F and 113F). [Multi-Function] High precision pressure sensor; Air speed; measurement of wind speed and temperature; Temperature selection C / F; With 6 sensitive vanes for you to measure HVAC installation, CFM calculation, duct vents.[Backlight Function] User can work in dark environment with your anemometer via backlight function. Manual/auto power off optional, it would power off automatically if you don't use it for 5 minutes. [Mini Size and Portable Design] Compact and lightweight, you can keep it in your pocket, comes with a orange protective case that provides good protection and a wrist strap ensures you can hold it even in strong winds. [Various Applications] This anemometer provides quick measurement for analyzing environmental conditions, ideal for industrial and home applications , such as measuring wind speed, fan, CPU computer fan temperature, and also used for windsurfing, sailing, fishing, drone flight and Mountaineering. Quantity delivered: 1 piece