While on the search for an alternative to directly buying the fairly expensive MH-Z19 CO2 sensor, [spezifisch] came across a ‘BreeRainz’ branded gadget (also found under other brands ...

When the meter was exposed to the breath from ... Wakayama Prefecture, introduced a CO2 detector fitted with a human sensor to count people at the waiting room for departing passengers.

Its compact design includes an Arduino board, a CO2 sensor, an SD-card module for data ... this pocket-sized CO2 meter is more than a scientific toolâ it's a gateway for students to become ...