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Decibel Meter Sound Pressure Level Meter (SPL) with Backlight Alarm, Portable Sound Decibel Level Meter 30~130dBA, Noise dB Sound Meter Audio Volume Monitoring Instrument Meter for Home Office: Amazon.com: Industrial & Scientific
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Model SM-100 | Digital Sound Meter is ideal for measuring noise levels. Features data hold, ability to record maximum/minimum, auto ranging, auto power-off, and a dynamic range. Ideal for technicians measuring and
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