Review on Quality Formaldehyde Detector Temperature Humidity by Robert Hayes
CO2 sensor not working
I dumped CO2 in my greenhouse 8x10 for 2 hours. 1 hour is very aggressive. This changed the ppm value to 10. Dangerous if you want to use this to monitor CO2 readings. Also, the humidifier and temperature were inaccurate compared to the other two devices. The device's maximum reading is 368ppm, a CO2 reading, although it's claimed to read up to 1,000ppm.
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