Calibration Settings
- Temperature Calibration
- Set the calibration value, the device will add calibration value to the current
temperature value, then display and report the final value.

- Humidity Calibration
- Set the calibration value, the device will add calibration value to the current
humidity value, then display and report the final value.

- CO2 Calibration
- The device provides multiple calibration methods for
CO2 calibration. Among them, it is necessary to select either
manual calibration or Auto Background calibration to ensure accurate
readings.

Calibration Method Description Manual Calibration Put the device in an open outdoor environment for more than 10 minutes and click Manual button to adjust the current value as 400ppm immediately. This calibration is the fastest but it adapts to the open outdoor environment. This calibration is suitable for some applications which need to place CO2 sensors in unventilated spaces, you can take sensors out to complete the manual calibration before installation.
Restore Factory Calibration Clean the manual calibration and turn back to factory calibration. Auto Background Calibration After enabled, the device will record the offset between 400ppm and lowest CO2 level during a calibration period of 168 hours (7 days) and add this offset to original baseline of sensor to complete the calibration. This calibration is suitable for some applications where CO2 sensors are placed in well ventilated or semi-ventilated areas.
Numerical Calibration Set the calibration value, the device will add calibration value to the current value, then display and report the final value. Altitude Compensation Set the altitude of the device to calculate the barometric pressure to compensate the CO2 value.