The Nuicon EE850 CO2 Sensor for Duct Mounting is a professional solution for centralized air quality monitoring. Installed in the return air duct, it measures the CO₂ level representative of the zone, allowing your Building Management System (BMS) to optimize fresh air intake automatically—saving energy while maintaining indoor air quality.”.






Quickly verify paint thickness for used car assessments, repairs, and quality checks.
Ensure coating specifications are met on structural steel, railings, and metal fixtures.
Perform fast pass/fail checks on production lines and incoming parts.
Confirm coating thickness during application to prevent costly over- or under-application.
We support easy integration with Siemens, Honeywell, and Schneider BMS systems.
Standard replacement warranty on all manufacturing defects.
Guidance on optimal probe placement for accurate readings.
No, the EE850 measures CO2 and Temperature. If you need to measure Air Velocity in the duct, use the EE650.
It should be installed in the Return Air Duct, well before the mixing chamber, to get an accurate reading of the indoor air.
No, the EE850 is built with a robust enclosure specifically designed to withstand HVAC duct vibrations.
Accurate CO₂ detection for smarter spaces

The wall-mounted version for measuring specific rooms.

Measure airflow speed in the same duct.

A low-cost option if you only need temperature control.










Stop wasting energy on empty buildings. Control ventilation efficiently with the EE850.