Control element with room temperature controller function and CO2/humidity sensor. With integrated KNX bus coupler. With labeling field. Support of KNX functions through innovative color concept (yellow=lighting, blue=blinds, orange=RTR, magenta=scene and white=neutral/no function assignment) or standard lighting red/green. Button function: switching/dimming/blinds/sending value/light scenes etc. For controlling heating, ventilation and fan coil actuators. Master/slave operation. With base load operation. The fan level can be switched manually or to automatic mode. Class of temperature controller: 1 Contribution to room heating energy efficiency: 1.0%. Number of bus participants: 2 If required, please refer to the current application description for the programmable functions, which you can download from our website www.busch-jaeger.de.