Accuracy 0.3 dB Sound Level Calibrator Voice Decibel Meter Calibration Instruments ND9B

Description

Features: Sound Pressure Level with 94 dB and 114 dB High Accuracy with 0.3 db Generates standard levels and frequencies Low influence of static pressure "Designed for 1"" and 1/2"" microphones" General Specifications: Model: ND9+ Standards: GB/T15173, ANSI S1.40 CLASS2, IEC942 Sound Pressure Level: 94dB & 114dB Accuracy: 0.3dB Frequency: 1000Hz "Calibration Of Microphones: 1"", 1/2""" Power Supply:1x6F22 9V Battery (not include) Dimensions: 142x47x47mm Weight:275g Package includes: 1.Main Unit 2.Carrying Case 3.Operation Manual