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Yw-532 Sound Level Meter Noise Level Meter Sound Monitor dB Meter Backlight LCD Digital Audio Decibel Meter - China Noise Meter and Sound Level Reader
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Protmex PT622A Sound Level Meter, Digital Decibel Reader Measurement, Range 30-130 dB with Large LCD Screen Display, Accuracy 1.5dB Noise Meter, Fast and Slow Selection: Amazon.com: Industrial & Scientific
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