The HD600 Datalogging Sound Level Meter meets ANSI and IEC 61672-1 Type 2 standards. It has three measuring ranges from 30 to 130 dB with 1.4 dB accuracy. In addition to the LCD digital display, an analog bargraph provides easy viewing of fast changing sound levels. Unit features a rugged double-molded housing and built-in stand. Meter comes with USB cable, Windows compatible software, windscreen, tripod, hard carrying case, 9-volt battery, and user manual.