REED Instruments R9450 Carbon Monoxide Monitor with Temperature and Humidity
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<b>[Product Information]</b><br>
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<li>Measures carbon monoxide (co), air temperature and relative humidity</li>
<li>User adjustable alarm limit</li>
<li>Built-in clock and calendar</li>
<li>Max hold function</li>
<li>Includes batteries</li>
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