<div dir="ltr">Hi All,<div><br></div><div>Im going to get another CO2 monitor, as a backup. I have decent, properly calibrated one, so i dont want to break the bank with this one.</div><div><br>Anyone got any ideas for a reasonably priced backup? It needs to go up to at least 1% really.</div><div><br></div><div>What are other people using?</div><div>Thanks</div><div>james<br><br></div>
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