[Accurate 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 113 F). [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 the function backlight. Manual/Auto power off optional, it would automatically power off if you dont use it for 5 minutes. [Mini size and portable design] Compact and lightweight, you can keep it in pocket , comes with an 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, temperature of computer CPU fans, and also used for windsurfing, sailing, fishing, flying. drone and mountaineering. Number of parts delivered: 1 Size: 49*21*112mm Specification: Air speed specification: Range: 0-30 M/S, 0-5860 FT/MIN, 0-55 knots, 0-90 KM/h, 0-65Mph Resolution: 0.1 m/s, 19 ft/min, 0.2 knots, 0.3 km/h, 0.2 mph Threshold: 0.1 m/s, 39 ft/min, 0.1 knot, 0.3 km/h, 0.2 mph, Accuracy: +/- 5%. Air temperature specification: Thermometer: NTC thermometer. Range: Between -10C and 45C / 14F and 113F Resolution: 0.2C, 0.36F. Accuracy: 2C, 3.6F luckymeet