... 2002 Class 2 2.Frequency Range:20Hz~12.5KHz 3.Wide dynamic range 4.Small and light weigh FEATURES Latest Digital Signal ... with IEC 61672 Class 2 USESWidely use in Industrial Noise Surveys ; machinery, vehicles, ships and etc May also used ... 5m, 10 m, 20 m, 30 m, 1 h, 2 h, 4 h, 8 h, 12 h, 16 h, ... m, 10 m, 20 m, 30 m, 1 h, 2 h, 4 h, 8 h, 12 h, 16 h, ... °C Integrating Sound Level Meter AWA 5636 Class 2