Extech CO200 Desktop Indoor Air Quality CO2 Monitor
</br></br>
<div style="text-align:left">
<b>[Product Information]</b><br>
<ul>
<li>Checks for Carbon Dioxide (CO2) concentrations with Max/Min value recall function</li>
<li>Maintenance free NDIR (non-dispersive infrared) CO2 sensor</li>
<li>Indoor Air Quality displayed in ppm with Good (380 to 420ppm), Normal (1000ppm) indication</li>
<li>Displays Year, Month, Date, and Time</li>
<li>Automatic Baseline Calibration (minimum CO2 level over 7.5 days) or manual calibration in fresh air</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/41UDUuCar1L.jpg'></br>
<img src='http://ecx.images-amazon.com/images/I/41wNobO0ndL.jpg'></br>
<img src='http://ecx.images-amazon.com/images/I/41S5h15CQOL.jpg'></br>
<img src='http://ecx.images-amazon.com/images/I/41jwrTidBaL.jpg'></br>
<img src='http://ecx.images-amazon.com/images/I/51kqZk%2B8GvL.jpg'></br>