Sound calibrator.
Model SMC-1 Sound Calibrator is ideal for setting standard noise levels at 94 dB and 114 dB. The SMC-1 has an output frequency of 1 kHz, Œ±4%. This unit functions best when environment conditions have a temperature of 68ŒÁF (20ŒÁC), relative humidity of 65%, and an atmospheric pressure of 29.9' Hg (1013 mbar).
