From the Manufacturer
Type 2 Sound Level Mete meets ANSI and IEC Class 2 standards and has a 1.4dB accuracy. Features include: A/C Weighting, Fast/Slow response time, Min/Max, Max Hold, and an analog AC output for connection to a recorder. A built-in RS232 port can be used to capture readings directly on your PC. Comes complete with 9V battery, software and cable, and carrying case.
Product Description
The Extech 407768 Auto Range Sound Level Meter meets ANSI and IEC Type II accuracy standards. Professional features include programmable frequency, weighting, and time response, Min/Max Memory, Max Hold, Analog output, and RS-232 PC interface.