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SLM25TK Sound Level Meter with Data Logging Function Measure 30dB~130dB and CD Software - Tekcoplus Ltd.
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5-in-1 Decibel Meter Wall Hanging Sound Level Meter 30-130dB Range 11 Inch Large LED Display Noise+Time+Temperature & Humidity Meter Wide Applications for Home, Studio, Factory, Classroom Noise Meter: Amazon.com: Industrial & Scientific
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