Item Name: LCD Backlight Display 0-30m/s -10 ~ 45C Wind Speed Meter Digital Anemometer. Operating temperature -10-45C Range of Air velocity 0~30m/s, 0~90km/h, 0~5860ft/min, 0~55knots, 0~65mph Weight 52gAccuracy of Air velocity 5% Resolution of Air velocity 0.1m/s, 0.2C Thermometer NTC thermometer Current consumption Approx. 3mA Range of Air temperature -10-45C Measuring items Air velocity (Wind speed), Air temperature Store temperature -40 ~+60 Accuracy of Air temperature 2C Operating humidity Less than 90%RH Battery CR2032 (not included) Anemometer:1.Air Velocity & Temperature Measurement 2.Max/Average/Current air velocity measurement 3./ Temperature unit selection 4.Five units of air velocity:M/s, Km/h, ft/min, Knots, mph5.Beaufort scale 6.Backlight display 7.Manual/Auto power shut off 8.Wind chill indication 9.Low battery indication.Package:1 Digital Anemometer *Please make