... -15 °C to 50 °C Complies with IEC 61672 Class 2 USESWidely use in ... Lavg, TWA, DOSE, E, SD, LXpeakStatistical AnalysisFunction NO Optional, L5, L10, L50, L90, L95, SDNOYESIntegral ... hRS232 Interface NO OptionalYES, with softwareYES, with softwareYES, with softwareUSB InterfaceNOOptionalOptionalOptionalYES, with softwareData StorageNOYES, 8000 groupsRecordingFunctionNOOptionalOver Limit Indicate NO YES, ...