Ruby Electronics CO-180 DIGITAL CARBON MONOXIDE CO GAS METER BEEPER
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<b>[Product Information]</b><br>
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<li>Super Large 3 1/2 Digit(1999 counts) multifunction backlit LCD ; Pocket size and easy to use</li>
<li>Fast sampling ; Max Hold and Data Hold</li>
<li>Auto power off ; Back light</li>
<li>Above 200 PPM, the beeper sounds continuously with the concentration of CO</li>
<li>Complete with 9V battery</li>
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