Measures temperature, humidity, and carbon dioxide (not carbon monoxide)
They appear to need calibrating, done by leaving in fresh air for a period of time.
From memory, I believe they use AA batteries fairly quickly, so probably best plugged in with micro USB cables.
Fair Chance Policy: I’ll wait before choosing a recipient to give more people a chance to reply.
CO2 air quality monitor x2 (Longbridge, B31)
Collection Times
Any day, after 5pm.
Any day, after 5pm.
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