1.Combinestemperature,humidity,light,anemo,airflow,soundlevelmeasurementatonehandheldmeter!2.Dual4digitsLCDdisplay3.Max/Min/Avg/Dif(max-nin)measurement4.DataholdandLCDbacklit5.Auto/manualrange,autopower-off6.Lowpowerindication7.SafetyasperIEC1010-1Cat.III TechnicalspecificationsTEMP:-20-60oC,-4-140oF, 1oC/2oFHumidity:10%-100%RH, 3.0RH%Light:0-50,000lux, 5.0%+5d 0.4-30m/s, 3.0%+5dAnemo:1.4-108.0km/h, 3.0%+5d 2-98.5ft/s, 3.0%+5d 0.8-58.3knots, 3.0%+5dAirflow(CMM):0-9999CMM, 2.0%+5dAirflow(CFM):0-9999CFM, 2.0%+5dSoundlevel:35-130dB