Measuring CO2 in every single room can be expensive. A smarter way? Measure the return air. The Nuicon EE850 is a professional Duct-Mounted CO2 & Temperature Transmitter. Installed directly into the ventilation duct, it calculates the average air quality of a zone. This allows your Building Management System (BMS) to adjust fresh air intake automatically—saving huge energy costs while keeping indoor air fresh.






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.
We keep duct sensors in stock in Bengaluru for urgent projects.
Guidance on optimal probe placement for accurate readings.
CO2 Range: 0…2000 / 5000 / 10000 ppm
Output:0-10V or 4-20mA (Selectable)
Sensing Tech: NDIR (Non-Dispersive Infrared)
Protection: IP65 Enclosure
Housing: Modern White Design (IP30)
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.