Tenmars ST-130 소음계 (30 ~ 90dB, 50 ~ 110dB, 70 ~ 140dB)
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배송 가능
Display: Single LCD Maximum reading 999999
Display Refresh Rate: 1 Time/second
Microphone (ST-130): 1/2" Electret condenser microphone
Accuracy: ±1.4dB at 94dB/1kHz
Frequency Weighting: A, C, Z
Time Weighting: Fast, Slow and Impulse
Starting Time: < 10 seconds
Frequency Range: 20Hz to 8kHz
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