Model AWA 6291 Real-time Signal Analyzer is a pocket real-time analyzer that can make analysis on the noise, vibration or other Fulfils StandardsIEC 61672 class 1Microphone1/2" Prepolarized Condenser Mic. Model AWA14423 (sensitivity : 50 mV/Pa)PreamplifierAWA14601Frequency Range10 Hz ~ 20kHzRange Gain10 dB, 0 dB, 10 dB, 20 dB, 30 dB, 40 dB.Range Error: ≤0.1 dBSelf-generated Noise<18 dB(A), 23 dB( ...