... .Comply with standard IEC 61672-1:2002 Class 2 2.Frequency Range:20Hz~12.5KHz 3.Wide dynamic ... °C to 50 °C Complies with IEC 61672 Class 2 USESWidely use in Industrial Noise Surveys ; machinery, vehicles, ... ,8h, Lavg, TWA, DOSE, E, SD, LXpeakStatistical AnalysisFunction NO Optional, L5, L10, L50, L90, L95, SDNOYESIntegral TimeNOManual, 10 s ... 50°C—10°C~ 50°C Integrating Sound Level Meter AWA 5636 Class ...