Digital Sound Level Meter Calibrator 94dB & 114dB for 1/2" and 1" Inch Microphone Portable W/ Backlight Calibration Tool Sound Level Calibrator ND9a ND9b
Applications: * Handy sound source for quick and easy calibration of sound level meters and sound measuring systems. * The Calibrator employs solid state integrated circuitry that provides accurate and stable performance. * Sensitivity calibration of 1" and 1/2" microphones. * Suitable for field and laboratory use. * The ND9B Applies display and key operation, simple to use. Specifications: