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...
The CR:510 series are are high performance acoustic calibrators designed for the calibration of sound level meters CR:515 calibrator is deliverd with a manual, calibration certificate and a battery...