... 2 for sound level metersInstantaneous sound measure functionWide measuring range 40~130dB (decibels) Two equivalent weighted sound pressure levels, ... ~ 8.5 kHz Linearity/Dynamic Range: 30dBMeasuring Level: 40~130dBA, 40~130dBCFrequency weighting: A and C Digital LCD: 45 x ... level display period: 50mSLevel ranges: 40~70 dB, 60~90 dB, 80~110 dB, 100~130 dB, 40~130 dBOver indicate over range: Under ...