All you need to know about Air Quality measurement

Measuring Air Quality can help you live in a healthy environment: learn how to know and use your product optimally with our advice.

Capteur CO2 connecté / CO2 sensor LoRaWAN

Carbon dioxide - CO2 measurement


The calibration process is performed automatically by the device every 8 days. No maintenance required. The reliability of CO2 measurements is guaranteed throughout the product’s lifetime.

You can also calibrate the CO2 sensor manually:

  • Place the product outdoors or near an open window for 10 minutes.
  • Press the secondary button on the back of the product for 3 seconds

Secondary button on back of detector

  • An LED lights up during the calibration process

The LED changes to Green, indicating that manual calibration of the product has been successfully completed. If a Red LED lights up, repeat the operation.

NFC (Near Field Communication) is a magnetic field technology used to exchange data between a product and a smartphone.

To configure the product, simply :

  • Download the free Nexelec TOUCH application from Google Play Store or Apple App Store
  • Select product and follow application instructions

NDIR (Non-Dispersive Infrared) sensors offer highly accurate measurement of CO2 levels. They use infrared spectroscopy to specifically detect CO2 molecules, enabling reliable and consistent measurements.

NDIR sensors are designed to maintain their calibration and accuracy over long periods, making them a durable choice for continuous monitoring of CO2 levels.

NDIR sensors are effective and reliable in an environment where CO2 levels reach at least a minimum of 400 ppm for several consecutive hours: at night and at weekends in communal areas, during the day in a bedroom.

Correct ventilation of communal areas helps reduce the risk of viruses spreading through the air.
Measuring CO2 levels enables you to quickly check the quality of air renewal, and encourages occupants to air the room if necessary.

CO2 can cause headaches, drowsiness, difficulty concentrating, mild nausea and rapid heart rate.
NEXELEC’s CO2 sensors provide reliable and accurate measurement of CO2 concentration.

NEXELEC sensors can measure CO2, depending on the model. Depending on WHO and ANSES regulations, thresholds may differ from one country to another. The values set out below are valid for ERP (Etablissements Recevant du Public) in France.

Carbon dioxide (CO2)

CO2 is a good indicator of Indoor Air Quality. If the ppm level is too high, ventilate the premises as soon as possible.

Interpretation of CO2

Measurement of Volatile Organic Compounds - VOCs

VOCs have very harmful effects on health. These molecules can trigger heart and nervous system disorders, irritation of the eyes and mucous membranes of the respiratory tract, nausea and more.

VOCs are detectable in :

  • Furniture (tables, cupboards, etc.), wall and ceiling coverings
  • Consumer products (cleaning and synthesis agents, solvents, degreasers, etc.)
  • Finishing products (varnish, glue, acrylic, silicone, etc.).

It is therefore important to be able to differentiate Volatile Organic Compounds from the rest of the pollutants present in the air.

NEXELEC Volatile Organic Compounds sensors continuously analyze the air and detect VOCs to help you act accordingly.

Volatile organic compounds (VOCs)

These compounds are emitted by paints, glues and other solvents. If the concentration is too high, ventilate as soon as possible.

VOC interpretation