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Amazon.com: TestHelper SW-526A Sound Level Meter Tester 30-130db 18in Large Screen LCD Display Wall Hanging Type Decibel Noise Measuring with Alarm (Enlarged Sound Level Meter) : Industrial & Scientific
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TK336PLUS Large Digital LED Screen Sound Level Meter Decibel Tester Th – 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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SLM-336 Smart Decibel Meter Large Colored LED Screen Display Sound Lev – Gain Express
