Acoustic calibrator 94dB(A) class 2

Acoustic calibrator 94dB(A) class 2
CIR/CR:514

Specifications CR:514 :
IEC 60942:2003 class 2
94dB +/- 0.4 dB
frequency : 1 kHz +/- 1%
Microphone size : 1/2"
Battery 1 x 9V
The CR:510 series are are high performance acoustic calibrators designed for the calibration of sound level meters
CR:514 calibrator is deliverd with a manual, calibration certificate and a battery