* Frequency & time weighting meet IEC 61672 class 1.
* 30 to 130 dB, 3 ranges, Max. hold, Data hold.
* A/C frequency weighting, F/S time weighting.
* AC output, Internal 94 dB calibration.
* Frequency & time weighting meet IEC 61672 class 1.
* 30 to 130 dB, 3 ranges, Max. hold, Data hold.
* A/C frequency weighting, F/S time weighting.
* AC output, Internal 94 dB calibration.
