Extech Instruments 407732 KIT Digital Sound Meter Set with 407744 Calibrator

High accuracy meets ANSI and IEC 651 Type 2 standards. High and low measuring ranges: 35 to 100 dB (low) and 65 to 130 dB (high). Data hold and max hold functions. Backlit LCD display for viewing in dimly lit areas. Includes 407722 - 1kHz 94dB sound calibrator (5% accuracy).