CO₂ Monitor


In stock

The new 3-in-1 air monitor from Smart Air measures CO2, temperature and relative humidity. Long-lasting with a battery life of up to 30 days, our low-cost monitor gives you the flexibility of choosing the alert thresholds and the frequency of recording.


CO₂ Monitor Technical Specifications

Your Purchase IncludesIncludes 1 × CO₂ Monitor, adhesive hook, charging cable, user manual
Dimensions L × W × H (mm)77 × 77 × 28
Weight (g)129g
RangesCO₂: 400 ~ 9999 ppm
Temperature:m-20 ~ 50°C
Humidity: 0 ~ 99.9%RH*
Power Supply5V – 1A / USB-C cable (5 watts)
BluetoothBluetooth 5.0
Sensors x3CO₂ (NDIR), Temperature, Humidity
CO₂ sensor lifespanStress tested for >10 years
Screen size61 × 49 mm
NetworkWi-Fi or NB-IoT or LoRa
Warranty1 year
* Do not place this product in environment with humidity higher than 90% for long term use

Battery Information

Battery TypeLithium (2600mAh)
Battery LifeApprox 35 days when uploading every 10 mins

The CO₂ Monitor FAQs

How do I customise the settings

Download the Qingping IoT app on your phone and follow instructions to link it to the device. Once added, click on the device within the app and click on the abacus on the top right (settings). Here you can name the device, create groups (if you have more than one device), set the thresholds for recording and uploading. You can also set the recording for CO₂ levels while on battery power (see FAQ on battery lifespan).

How long is the battery life?

The battery can last for up to 30 days depending on your settings (frequency of recording, frequency of uploading and frequency of recording CO₂ when on battery power). The default setting is around 30 days, the minimum is 3 (in temperatures under zero degrees) or 6 days (in temperatures above zero degrees). We will try to put together a calculator that gives you a better idea of lifespan according to your chosen setting

Do I need to reset the CO₂ sensor?

Our air monitors are calibrated at the factory and uses auto-calibration. This means that you shouldn’t need to calibrate again as long as the device is exposed to CO₂ levels of around 400-500ppm (outdoor temperature) for a few hours every month. If the device is not getting enough exposure to outdoor levels, the sensors may drift over time. If this happens, you can reset the CO₂ sensors in the Settings accessed via the app.

If you need a more accurate reading, the auto-calibrate can be switched off and you can rely on regular manual resets but for most people, we recommend keeping the auto-calibrate switched on.

If your indoor environment is dusty, you may need to calibrate more frequently.

Will the CO2 monitor fit inside the top compartment of the QT3?

Sadly not, it is wider and deeper than the compartment hole


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Smart Air is a social enterprise and certified B-Corp that offers simple, no-nonsense air purifiers and provides free education to protect people from the harms of air pollution. We are proud to be the only certified B-Corp dedicated to fighting air pollution.

Certified B-Corp air purifier company