Transmitters with automatic calibration combining measurement of CO2 level and temperature in the same casing. The sensors are mounted in the cover-part of
the casing. The cover is easy to detach from the back by means of snap-in grips and detachable terminals. This makes mounting easier. Furthermore, no cables have to be disconnected, simplifying service and replacement. The transmitters are intended for wall mounting in HVAC systems.

CO2 sensor
The CO2 concentration is measured using infrared light, a technique that measures the absorption in gases. It has a reference measuring system that compensates values in relation to changes in light intensity. This technique has many advantages:
• Very high accuracy
• Exact identification of the detected gas
• Low risk of contamination
• Short response time
• Excellent long-term stability