MICS6814 3-in-1 Gas Sensor Breakout (CO, NO2, NH3)Measure changes in the concentration of gases including carbon monoxide (CO), nitrogen dioxide (NO2), and ammonia (NH3) with this Breakout Garden compatible I2C breakout. The MICS6814 sensor comprises three semiconductor gas sensors in a single package and can detect three different groups of gases referred to as reducing, oxidising, and NH3. Major gases detected include carbon monoxide (reducing), nitrogen dioxide (oxidising), and ammonia (NH3), with