... 35`140dB(A), Summary:HS5633 digital sound level meter is newly developed according to the requirements of ... the new standard of national sound meter, it has A, C sound levels, and ... accords with the requirements of IEC61627 Meter> standard to Model 2 sound level.Main technical ... and function:1. Measuring range of sound level meter:35130dB(A;2. Frequency range: 20Hz12.5kHz;3 ...