◆ Response frequency: 31.5Hz-8kHz
  ◆ Dynamic range: 50dB
  ◆ Frequency Weighting : A/C
  ◆ Time weighting: FAST 125ms, SLOW 1sec
  ◆ Microphone: Electret Condenser microphone
  ◆ Digital Display: 4 digitals, resolution 0.1dB, sampling rate 2 times/s
  ◆ Analog bar display: Each analog bar is as 1 dB, sampling rate 20 times/s
  ◆ Measurement ranges: 30-80dB, 40-90dB, 50-100dB, 60-110dB, 70-120dB, 80-130dB, Total of 6 ranges
  ◆ Auto-range: Micro-computer can choose the best measurement ranges
  ◆ Over range indicator: UNDER (less than range) and OVER (over range)
  ◆ AC signal output: 0.707 Vrms at FS (Auto-range mode isn't included) Output impedance approx. 600Ω
  ◆ DC signal output: 10mV/dB Output impedance approx.100Ω
  ◆ Power supply: Four LR03 AM4 1.5V SIZE AAA alkaline cells
  ◆ Power life: About>35hrs (alkaline cells) Cintinuous operation
  ◆ AC adapter: Voltage 9vDC
      Voltage ripple < 100mVpp
      Supply Current >100mADC
      Socket pin Ground
      Casing positive
      External Diameter 3.5mm
  ◆ Data recording: 16000 data(extended to 128000 data)
  ◆ Operating temperature: 0℃ to +40℃ 
  ◆ Operating humidity: 10~80%RH
  ◆ Storage temperature: -10℃ to 60℃
  ◆ Storage humidity: 10 to 70%RH
  ◆ Dimensions:245(L)x80(W)x35(H)mm
  ◆ Weight : Approx. 350g (including battery)
  ◆ Safety rating: CE(EMC) RoHS

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  ◆ Display: 2000 counts
  ◆ Data Logging: 16000 records
  ◆ Auto Ranging
  ◆ Auto Power Off
  ◆ AC Singal Output: 0.707 Vrms at FS (Auto-range mode isn't included) Output impedance approx.600Ω
  ◆ DC Singal Output: 10mV/dB Output impedance approx.100Ω
  ◆ AC Adapter
     - Voltage 9VDC
     - Voltage Ripple <100m Vpp
     - Supple Current >100m ADC
     - Socket : pin Ground
     - Casing Positive
     - External Diameter 3.5mm
  ◆ Fast
  ◆ Low
  ◆ A Weighting
  ◆ B Weighting
  ◆ Date and Time Display
  ◆ MAX
  ◆ Data Hold
  ◆ Display Backlight
  ◆ Low Battery Display
  ◆ Analog Bar Indication
  ◆ Over Range Indication
  ◆ RS-232 Pclink(미포함)
  ◆ USB Interface