General Tools DSM403SD Sound Level Meter with Data Logging SD Card, Class 1 Sound
</br></br>
<div style="text-align:left">
<b>[Product Information]</b><br>
<ul>
<li>Big (2.5 inch diagonal) front-panel green backlit LCD is easy to read</li>
<li>Makes measurements in auto ranging mode or within a manually settable range</li>
<li>Performs automatic data logging at sampling time settable from 1 second to 9 hours - supports manual logging and changing of card storage location</li>
<li>Displays maximum and minimum readings and holds any reading</li>
<li>Auto power off function</li>
</ul>
</div>
</br></br></br></br></br></br></br></br></br></br>

</br></br></br></br></br></br></br></br></br></br>
<img src='http://ecx.images-amazon.com/images/I/41l1MKcM51L.jpg' noproxy></br>