Transducer diaphragm to correct pressure in high altitude areas Altitude Impact: Approximately 0.1dB per 2000ft elevation to 12,000ft from sea surface or approximately 50mmHg for equivalent pressure changes.
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Output levels are 94dB and 114dB and the output frequency is 1000±0.1%Hz (can be calibrated in A,B,C,D weighting networks or linear).
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Package Contents 1 x Acoustic Caliber 1 x 9V battery (free) 1 x Japanese instruction manual Standard Factory Packing Box
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