... , CD, fan cover, horologe screwdriver, briefcase Modal TL6288BMeasuring range A sound level:30-135dB C sound level:35-135dBLinearity ... Lmax,SD,Ld,Ln,Ldn,1/1 frequency spectrumFilter characteristics1/1 frequency intervalcentre frequency: 31.5Hz,63Hz,125Hz,500Hz,1kHz, ... for external powerDimensions Main machine: 240mm×81mm×31mm Printer: 178mm×81mm×31mmWeight 0.4kg , printer: 0.41kg digital sound frequency ...