• Measures frequency weighted noise exposure andpeak (C, Z) sound level• Datalogs up to 999,999 readings when used asa sound level meter with sampling times between1 second and 24 hours• Sound level mode: displays sound level, min/max,time-averaged sound level (Leq), peak, and soundexposure level (SEL)• Adjustable Criterion Level, Exchange Rate, & Threshold• One user-defined measurement setup• Optional 94dB calibrator to perform “before” and “after”calibration checks per ANSI standards• USB interface with Windows 7 and 8 compatiblesoftware to control setup and retrieve stored events oranalyze real-time measurements• Complete with belt clip, clip-on 0.5" (12.7mm)microphone with 32" (81.3cm) cable and windscreen,9V battery, software, USB cable, and carrying case