With this service set, a complete installation can be easily programmed by one single person. All devices can be connected with one another without requiring access to the housing units. The service set can also be used to analyse the installation or to locate an error in the installation. Thanks to the built-in call suppression, all basic functions can be tested and programmed without bothering the residents. The service set is connected to the external unit(s) or the bus using a connection plug.