The BK Precision 735 Data Logging Digital Sound Level Meter is designed for testing sound levels for OSHA compliance, quieting equipment, or monitoring the roar of a stadium crowd. The 735 provides a range of 30 to 130 decibels in three convenient measurement ranges of low, medium, and high. This meter meets the IEC 651 Type II standards and includes both frequency weighting A and C and fast and slow time weighting. The two auxiliary ports provide either AC output, 1Vrms full scale, or DC output and 10 millivolts per decibel. All sound testing needs can be met with this unit. The 735 expands upon the 732A model by including interface with RS-232 Windows Software, a clock display, and data logging capabilities up to recording 32,000 records.