2. CO2 Sensor Calibration¶
You can calibrate the sensor in the outdoors so it will set up its own lowest CO2 level to 400 ppm.
Procedure to start the calibration:
Press and hold the button for 6 seconds (button is located next to the USB connector).
Release the button.
The LED will start to blink every 5 seconds.
Place the Cooper outdoor to the fresh air.
The complete calibration takes 72 minutes.
Calibration is done when the LED stops blinking.