94 dB Sound Calibrator for Noise Sound Calibrator 114dB Class 1 Noise Meter

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