Pocket real-time noise signal analyzer class 1 statistical, 1/1OCT,1/3 OCT analysis FFT, reverbration time measuring SPECIFICATIONS NoModelAWA62911NameReal Time Signal Analyzer2Fulfils StandardsIEC 61672 class 1 and IEC 61260 class 13Microphone1/2" Prepolarized Condenser Mic. Model AWA14423 (sensitivity: 50 mV/Pa)4PreamplifierAWA146015Frequency Range10 Hz ~ 20 kHz6Range Gain-10 dB, 0 dB, 10 dB, ...