CO2 Sensors

Senseair's compact, high accuracy, low power consumption NDIR type CO2 sensors and AKM's CO2 sensor components


Senseair AB, a member of the AKM Group, creates non-dispersive infrared (NDIR) CO2 sensors that are compact yet highly accurate and which consume so little power that they can be powered by batteries.
Concerns about the spread of disease has led to indoor ventilation becoming even more important. These CO2 sensors are ideal for use in portable products for monitoring air quality in classrooms, office buildings, and stores, and other spaces.

In addition, energy savings and comfortable environments can be realized in sealed indoor environments such as high-rise office buildings by controlling air conditioning ventilation systems while measuring CO2 concentrations.
In automotive applications, air conditioner workloads can be reduced by optimally controlling ventilation flow while measuring the CO2 concentration of the car cabin. This improves fuel efficiency while reducing power consumption.

AKM also manufactures and sells components used in NDIR CO2 sensors (LED elements, photosensitive elements, and analog front-end ICs with built-in LED drivers).
The infrared detectors are high-sensitivity, fast response, and compact. They are also equipped with optical filters that selectively transmit only the infrared absorption spectrum band of the gas to be detected.


What are CO2 sensors?

  • What is CO2?
  • Gas Sensors types and mechanism
  • What is NDIR (Non Dispersive InfraRed) ?

What makes Senseair different ?

Why have we been able to lead the industry for so many years?

  • World's smallest class current consumption
  • High accuracy even in compact


Introduction of application cases utilizing CO2 sensors

  • Indoor Air Quality by CO2 Monitoring
  • CO2 Monitoring in real-life house
  • CO2 Monitoring in indoor space
  • Customer story of SAF Tehnika


  • Sensor Core (Senseair)
  • Sensor inCase (Senseair)
  • Sensor Element

Design Support

Document Download

  • Datasheet
  • FAQ


Latest Information

  • New Product
  • Customer Stories

About Senseair

Senseair, a member of the Asahi Kasei Microdevices Group in 2018, is a leading global provider in gas sensors using non-dispersive infrared (NDIR) technology. For more than 25 years, Senseair has developed and manufactured highly cost-effective, high-performance gas sensors. Senseair has many engineers in its R&D department that always aiming to apply the latest industrially viable technologies on the market into their products.