Extech 407730-NIST Digital Sound Level Meter 40-130dB with NIST
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<b>[Product Information]</b><br>
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<li>2dB accuracy with 0.1dB resolution</li>
<li>A+C weighting</li>
<li>AC analog output</li>
<li>Record Max/Min values over time</li>
<li>Utilizes 0.5"(12.7mm) electret condenser microphone</li>
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