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Anyone know other, possibly cheaper, devices besides https://www.co2meter.com/products/co2mini-co2-indoor-air-quality-monitor https://www.co2meter.com/products/

by Sujan 8y ago

Anyone know other, possibly cheaper, devices besides https://www.co2meter.com/products/co2mini-co2-indoor-air-quality-monitor https://www.co2meter.com/products/co2mini-co2-indoor-air-qua... that can display current CO2? I hoped there would be cheaper versions on Aliexpress, but no luck :(

blakesterz 8y ago
It looks like the same thing is cheaper on Amazon.
Heliosmaster 8y ago
MH-Z19 is a sensor on sale on Aliexpress for ~20 USD. It works with Arduino and ESP32