SL814 Digital Sound Noise Level Meter, Sound Meter, Sound Level Meter

Features: Conformed to the IEC 651 Type 2 and ANSI S1.4 Type 2 set standardWide Measuring Range: 40 ~ 130 dB(optional with USB PC Interface)With 2 equivalent weighted sound pressure levels A and CFast and Slow dynamic characteristic modesBar graph indication for Sound Level RangeMaximum hold functionLarge LCD screen with 4 digits readingMAX/MIN QUASI-ANALOG BAR INDICATORFast & Slow response selectableLow battery indicatorMeasuring Level: 40~130dBA, 40~130dBCAccuracy: ± 2 dBFrequency Range: 31.5 Hz to 8.5k HzLinearity Range: 50dBFrequency Weighting: A, CDigital Display: 4 digitsResolution: 0.1dBDisplay: 0.5 secretaryAnalog Bar Graph: 50dB scale at 1dB step for monitoring current sound pressure level display period of 50mSOverload indication: Under indicate less than lower limit of the rangeAC output: 0.707 Vrms at FS output impedance approx 600? DC output: 10 mV / dB output impedance approx 100? Dynamic Characteristic (Time weighting): FAST (high speed) / SLOW (low speed)Microphone: 1/2 inch electret condenser microphoneMax: Maximum holdPower Supply: 9V alkaline battery(not included) or DC 9V 100mAOperating Environment: 0° C to 40° C, 10% to 70% RHStorage Environment: -10° C to 50° C, 10% to 80% RH