... DT-82 Mini Anemometer* MAX: Maximum mode* AVG: Average mode* M / S, FPM, KPH, MPH, KNT: wind speed unitsFeatures:1, bring ... mode;4, press and hold "MAX / AVG" button 3 seconds, to enter the unit loop conversion mode.Specifications:FunctionRangeAccuracym/s(meter ... power off: 15 minutesOperating temperature: 32 to 122 °F (0 to 50 °C)Storage temperature: 14 to 140 °F (-10 to 60 °C)Operating Humidity: <80 ...