The carbon dioxide meter PCE-CMM 5 measures the CO2 content in the air and shows the measured value on a large LCD display. The CO2 content in the air is an important measure for checking the ventilation behavior in offices, classrooms, lecture halls, etc. - Large CO2 measuring range up to 5000 ppm - Traffic light function for carbon dioxide - Measures temperature and humidity - 5 h graph for long-term monitoring - Battery and power adapter operation - Suitable for classrooms, nurseries/kindergartens, lecture halls