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Measure the level of CO2 and optimize the renewal of indoor air

Carbon dioxide

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Available radio protocols:


Other protocols available on request

The advantages of CARBON

10 years of autonomy 

Wireless, CARBON has an autonomy of 10 years thanks to a powerful battery*.

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Configurable CO2 indicator

This product has an LED indicator that allows you to easily view the CO2 level.  This indicator is customizable to personalize the CO2 thresholds according to your needs.

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Intelligent NDIR sensor designed for safety, sobriety and air quality

Thanks to its integrated IoT radio module, CARBON transmits real-time measurements of CO2, temperature and humidity. No internet connection is required.

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*battery life may vary depending on usage


Ventilate only when necessary


CARBON analyses the CO2 level every 10 minutes and visually alerts occupants when it is time to ventilate to renew the indoor air. Thanks to its wireless IoT communication module, the ambient data can be accessed remotely, simply from a smartphone or computer screen*.


* Optional subscription fees may apply.


Reliability of CO2 measurements

Measuring the CO2 level is a reliable indicator of the proper air renewal in an enclosed space.


CARBON is equipped with a latest generation "NDIR" type CO2 sensor that complies with the regulations for monitoring air quality in establishments open to the public.

The accuracy of the CO2 detector measurements has been validated by an independent COFRAC approved laboratory.


No maintenance is required and there is no risk of measurement drift over time. CARBON integrates an automatic and weekly recalibration function of its CO2 sensor.

A manual calibration of the CO2 sensor is also possible

Connect your CO2 sensors

CARBON is a connected CO2 sensor available in different wireless IoT protocols :


I420LR : LoRaWAN CO2 sensor

I420SF : Sigfox CO2 sensor

I420EO : EnOcean CO2 sensor


IoT network connectivity is adapted to all use cases requiring enhanced Indoor Air Quality (IAQ) monitoring :


CO2 sensor classroom, school group, educational institution

CO2 sensor for schools, nurseries, high schools, universities

CO2 sensor for canteen, restaurant, self-service

CO2 sensor office, company

CO2 sensor for shops, shopping centers

CO2 sensor ERP, collective spaces, sports halls

CO2 sensor at work


Detector from 129€ excluding tax

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Monitor and analyze Indoor Air Quality

In our app App.Nexelec application or that of our partners, easily visualize the history of your data in the form of graphs or reports. Continuously observe the environment of your indoor spaces, remotely and via a 100% secure access. Analyse indoor air quality, consult ambient data (temperature, humidity) and set up the notifications that interest you.

A healthier indoor environment

qualité d'air ok

Very good

qualité d'air moyen
qualité d'air attention



In collective spaces, the display of the CO2 level on a screen is potentially stressful for users and can make it harder to interpret the measurements.

The Green / Orange / Red indicator simplifies the immediate understanding and the implementation of actions adapted to the air renewal.


The detector's indicator light is fully configurable. 

Simply download the free App.Nexelec application from the Google Play Store on your Android smartphone and configure your detector in "contactless" NFC to change the thresholds that trigger the indicator light.

By default, the light turns Orange at 1000 ppm and Red at 1700 ppm.

Easily install your sensors



CARBON can be mounted on the wall with its anti-theft base or free standing on a table, so that it can be easily moved from one space to another.


CARBON does not require an electrical connection and has built-in batteries with 10 years of autonomy that cover the entire life of the product. There is no need to continuously replace the batteries.


Designed for communities and businesses

CARBON is a robust, totally sealed and tamper-proof product, perfectly adapted to the requirements of all establishments receiving the public.


Sober and elegant, CARBON integrates into any type of interior : offices or schools. The sensor does not have a screen for more discretion and enhanced reliability.

Our references

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