Havkon WMT.CT series wall mounted CO₂ transmitters are designed for accurate and reliable carbon dioxide (CO₂) measurement in HVAC air streams and internal unit installations. Using long-life NDIR sensing technology, the device ensures stable and drift-resistant CO₂ monitoring for ventilation control and indoor air quality applications. The compact IP54 enclosure combined with an external sensor probe allows precise measurement directly within internal airflow. Selectable analog outputs (0–10V / 2–10V / 4–20mA) provide seamless integration into building automation systems