The KNX CO₂ sensor and humidity controller from Gira is a highly advanced measuring device specifically designed to monitor CO₂ concentration, humidity, and room temperature indoors. This device is part of the KNX System 55 and offers precise limit monitoring to ensure a healthy indoor climate. The sensor can be configured with up to four different limit values for CO₂ concentration and two for humidity. Additionally, it features a dew point alarm, which is particularly important in environments such as chilled ceilings or conservatories to prevent mold formation. The humidity controller offers five different operating modes and supports both heating and cooling functions, making it a flexible solution for various climatic requirements. With its robust metal construction and digital display, the sensor is both functional and aesthetically pleasing.

• Up to four adjustable limit values for CO₂ and two for humidity
• Five operating modes: Comfort, Stand-by, Night, Frost or Heat Protection, and Controller Lock
• Valve protection function for cyclically opening the valve every 24 hours
• Flexible assignment of functions to inputs, including switching and dimming
• Built-in logic gates for simple linking functions.