The C20B is a carbon dioxide designed specifically for educational applications. The C20B provides fully temperature compensated readings of Carbon Dioxide (CO2) concentrations from 0 to 65% , over the temperature range 0-40C.
The C20B has a TTL level digital output showing the instantaneous and averaged CO2 readings.
The C20B can be run using just four connections -+5V, 0V, Serial In, Serial Out.