The apartment has in all rooms a telephone network and an Internet network (total 2). All cables, including the alarm, end up in the attic in racks and switches respectively. A new generation cable, suitable for optical fiber, has been lowered and connected to the OTE box of the apartment building. Also in the apartment is installed a system of Legrand NETATMO (smart home), which is connected to all switches and sockets as in all switches and sockets there are three cables that serve this purpose. The same applies to the installation of a gas boiler. The house is for sale (optional) with the household goods, therefore air conditioners, washing machine, shutters, intercom, living room light and sockets, also work from a mobile phone via WiFi network. Finally, there is an internal installation (wiring) for home cinema with the corresponding cable sockets for speakers in four places in the living room high on the walls and RF wiring in all bedrooms (3), so that anything can be shown in them in the living room. All devices, amplifiers and transponders end up in the attic.