This meter is a portable and professional wind speed measuring instrument with a large LCD display and backlight, multi-unit switching functions including wind speed: 0.80 ~ 30.0m/s and wind speed accuracy: 0.01m/s The digital anemometer provides quick measurement for analyzing critical environmental conditions. With LCD display, flow area setting, Max/Min, auto power off, backlight and low battery indicator This digital anemometer is an ideal instrument for windsurfing, sailing, fishing, kite flying and mountaineering, etc. And it can also be used for industrial and household purposes, such as measuring the wind speed of computer CPU fans, air conditioners, air blowers, etc. Wind speed and air volume in LCD display. Digital Anemometer Handheld measures wind speed in 6 units: m/s, ft/s, ft/m, km/h, mile/h, Knots Product Description: This meter is a digital anemometer for measuring wind speed and air volume. This meter is a professional portable measuring instrument with large LCD display and backlight, multiple switching functions. This meter can be used for manual or fixed measurement. This meter has the reading functions: hold, maximum, minimum, etc. Low battery indicator. Product Specifications: m/s (meter per second): 0.80 ~ 30.0 ± (2.0% of reading + 150) ft/s (feet per second): 1.3-98.5 ± (2.0% of reading + 50) ft/m (feet per minute): 80 ~ 5900 ± (2.0% of reading + 50) km/h (kilometer per hour): 1.4 ~ 108.0 ± (2.0% of reading + 50) mile/h (km per hour): 0.9 ~ 67.0 ± (2.0% of reading + 50) knots (nautical miles per hour): 0.8 ~ 58.0 ± (2.0% of reading + 50) CFM: 0 to 99990 0 to 9.999 ft² CMM: 0 to 99990 0 to 9.999 ft² CMS: 0 to 9999 0 to 9.999 m² Package Contents: 1 x Digital Anemometer