What is Senseair S12 CO₂?

Senseair S12 CO₂ is Senseair’s smallest true NDIR CO₂ sensor, developed for compact products where accurate CO₂ measurement, low power consumption and long-term stability all matter. It is well suited for indoor air quality monitoring, wireless systems, demand-controlled ventilation and embedded CO₂ sensing.

What makes S12 CO₂ different from other CO₂ sensors?

S12 CO₂ brings true NDIR CO₂ measurement into a very small sensor format. It combines a solid-state optical design, LED light source, low peak current and digital communication, making it a strong choice for products where space and power are limited but measurement quality still needs to be dependable.

Is S12 CO₂ suitable for modern IAQ standards?

Yes. S12 CO₂ is developed for modern indoor air quality applications and supports key building standards including ANSI/ASHRAE Standard 62.1, RESET, WELL v2 and Title 24. It is made for products where CO₂ data is used to support ventilation, indoor air quality and building performance.

What is S12 CO₂ DT?

S12 CO₂ DT is the Dual Technology version of S12 CO₂. It is developed for 24/7 occupied environments where CO₂ levels do not reliably fall back to a fresh-air baseline, such as hospitals, nursing homes and control rooms.

When should I choose S12 CO₂ DT instead of standard S12 CO₂?

Choose S12 CO₂ DT when automatic background calibration cannot be relied on as the main stability mechanism. In permanently occupied environments, the sensor needs to remain dependable without assuming that the room will regularly return to outdoor CO₂ levels.

Does S12 CO₂ use NDIR technology?

Yes. S12 CO₂ uses true non-dispersive infrared technology. NDIR measures CO₂ directly through infrared absorption, which is why Senseair continues to build its CO₂ sensing platforms around this optical measurement principle.