1.digital display,full scale measurement,AC/DC signal output 2.fast/slow ... .It is suitable for various routine tests.1.characteristics1) digital display, full scale measurement, AC/DC signal output2) fast and slow ... any range between 40dB-130dBDetection characteristicsTrue effective valueDigital indicationLCD automatic display, resolution ratio 0.1dB, updating speed 1 time/secAC signal ...