AR826 digital anemometer has 0~45m/s wind speed measuring range, accuracy ±3% ±0.1 digit, m/s / Ft/min / Knots / km/h / Mph wind speed units, resolution 0.1m/s, range bar graph, current / average measuring, max and min measuring, temperature measuring range, temperature resolution, ℃ / ℉ selection, backlight display, auto / manual power off, battery indication, data hold, wind chill indication, 9V battery.