CO₂ Monitor Sale This is a 800mA single-input

This is a 800mA single-input

Maybe you need to really reduce your power consumption and running the sensor all the time will consume too much power

The github repository for the design files and instructions is available here:

3V or 5V available

Please note: I have had a couple of negative reviews about this kit (see below)

CO₂ Monitor Sale This is a 800mA single-inputKnow when to ventilate your room! Keep the air fresh and circulating with this carbon dioxide monitor. There has been quite a lot of discussion about using carbon dioxide as an indicator of stale, non moving, air which could cause the build up of covid 19. A really interesting discussion from Make magazine is here: https: makezine. com 2021 04 22 plan c02 live . The concept is: if there are lots of people breathing out CO and the room is not well