This carbon monoxide (CO) gas sensor detects the concentrations of CO in the air and outputs its measured values as analog voltage. The sensor can measure concentrations from 10 to 10,000 ppm. The sensor can operate at temperatures from -10 to 50°C and consumes less than 150mA at 5V.
>Connecting five volts via the heater pins (H) keeps the sensor hot enough to function properly. Connecting five volts to either the A or B pins causes the sensor to output an analog voltage to the other pins. A resistive load between the output pins and ground adjusts the sensitivity of the detector. The resistive load should be calibrated for your particular application using the equations in the data sheet, but a good starting value for the resistance is 10 kΩ.
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