A Zehnder CO2 Sensor is the must-have device for your ventilation unit to upgrade your indoor air quality to the next level. The sensors are ideal for small apartments and large properties. Take full control of your indoor air quality 24/7, while the sensor automatically measures CO2 levels. In addition, the Zehnder CO2 sensors enable you to achieve the best performance of your system by constantly adapting the airflow to different conditions. Easy installation through on-wall or in-wall mounting is another plus. If more than one sensor is required in a building, it is possible to synchronize sensors to get an overview of the CO2 level in all rooms.