... turn on the unit.LCD will dispayWind speed, temperature and battery icon.LCD backlight will ... per hour;Cu Current wind speed,MAX max wind speed, average wind speed.4) oC/oF switch option ... (impeller) turns,LCD will instant display wind speed and temperature,when temperature below 0 .7) ... press th key for /conversion. Application:Wind speed rangeUnitRangeResolutionThresholdAccuracyM/s0~300.10.1 ±5%Ft/min0 ...