... detection,auto test range conversion,wide dynamic range, 2.GB/T 3785,1-2010,GB/T 15952,IEC61672 3.30-year experience TL5618B ... individual sound exposure sound level meterIt meets IEC 61672 standard, GB/T 3785,1-2010, and the second class sound level ... meter standard and individual sound exposure meter standard of GB/T 15952.digital detection, automatic measuring range conversion, wide dynamic ...