What to Do If the Temperature and Humidity Reading Is Different on My Meter Pro and CO2 Monitor?

Last Updated: 2024 Dec 16

• Related Product: SwitchBot Meter Pro, SwitchBot Meter Pro (CO2 Monitor)
• SwitchBot App Version：9.4 or newer

1. Make sure the device itself is selected as the data source by going to SwitchBot App -> Meter Pro or CO2 Monitor -> Settings (gear icon) -> Panel Display -> Temp and Humidity Source.

2. Place your Meter Pro and CO2 Monitor in the same location, keeping at least 1 cm (0.4 inches) of distance between them to avoid interference.

3. Wait 30 minutes after placement and check the readings again.

Normal differences in accuracy:

Temperature:

• ±0.4°C at -20°C to 0°C
• ±0.2°C at 0°C to 65°C
• ±0.3°C at 65°C to 80°C

Humidity:

• ±2% (at 25°C, 10%~90%RH)
• ±4% (at 25°C, 0%~10%, 90%~99%RH)

4. If the readings still differ significantly, you can manually calibrate the devices by opening SwitchBot App -> Meter Pro or CO2 Monitor -> Settings (gear icon) -> Calibration, and adjust the temperature and humidity readings to match.

Note: When the CO2 update frequency is set to less than 1 minute, the CO2 sensor is continuously active, which may cause the device to heat up slightly and affect the sensor's accuracy. In such cases, you may need to reset the sample frequency interval.

5. If the issue persists even after waiting 5 minutes post-calibration, please contact us via SwitchBot App -> Profile -> Support ->Feedback. When reaching us, could you please provide us with the following information?

• A photo showing the readings from both devices.