Professional Decibel Meter Calibrator, Digital Sound Level with Backlight Display High Accuracy (114dB / 94dB 104dB Calibrator)

Three Calibration Level 114dB, 94dB and 104dB with calibration frequency at 1KHz. The cavity diameter of this sound level calibrator is 13.2mm. Carefully insert the microphone to the calibrator's cavity, make sure its aligned to avoid damage. Battery operated, compact, portable easy to carry anywhere. Benchtop design - It provides stable position for easy calibration. LED indicator, the green LED indicates that the calibrator is turn on and warm up time is completed, red LED indicating low battery. Green LED also indicates each calibration level. This calibrator is very handy with 60 x 130 x 37.5mm dimension and approximately 400gms weight. With its auto power off function, you can conserve the battery usage, Manufacturer: Gain Express Holdings