Digital Sound Level Calibrator — 94dB & 114dB for 1" and 1/2" Microphones, Professional Decibel Calibration Tool, 0.3dB Accuracy

A professional-grade calibrator for sound level meters that provides reliable reference tones for quick on-site or laboratory checks. Produces stable sound pressure levels of 94dB & 114dB to verify and adjust decibel measurements. Test tone frequency: 1000±0.01% Hz, compatible with A, B, C or D weighting networks and linear response modes. Measurement accuracy is 0.3dB (20°C, 760mm Hg) to ensure consistent calibration results. Designed to fit both 1" and 1/2" microphones. Temperature coefficient: 0~0.01 dB/°C.