KNX is an international standard for intelligent electronical installations, which is going to replace the conventional electronic installations. KNX combines different functions and systems to one single system. By conventional electrical installation you need to plan where and how you would like to place your building services before the house construction. However that's not the case using KNX. You are totally free - even after finishing the house construction - because many functions are modifiable and expandable. That is possible without laying new pipes and as a result a lot of dirt. All of the devices and machines of the building automation are connected via bus line. When you activate a sensor (e.g. the ambiento) the actuators (e.g. shutter control) get a signal and the desired switch command is goint to be performed.