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3. TECHNICAL SPECIFICATIONS
Applicable standards IEC61672-1: 2013 Class 2
Measurement range Auto: 30 to 130 dB, Manual: 30–90 dB,
50–110 dB, and 70–130 dB
Microphone 1/2 inch polarized condenser
microphone
Frequency range 31.5Hz ~ 8000 Hz
Accuracy ±1.5 dB (at reference condition of 94
dB and 1 kHz)
Resolution 0.1 dB
Data update rate 500 ms
Frequency weighting A and C
Response time FAST: 125 ms, SLOW: 1 sec
Standard calibrator 1 KHz sine wave @ 94 or 114 dB
Display 3-1/2 digit LCD with analog bar graph
Out of range
indication
“OVER” and “UNDER” indicators on
LCD
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