Every apartment is equipped to a monitor that is possible to observe & accept visitors accompany by security & comfort for apartment residents. A monitor & a receiver are used comfortably by each resident. An apartment has a receiver & service chassis (optionally), light chassis & unlocked chassis. Also the system is equipped by an automatic entrance (emergency summoning); this possibility is given to the apartment resident adjusting as soon as a visitor presses the door bell, the entrance door opens automatically. Also it can be disconnected the door bell of your apartment.

It is possible to install each apartment with four common wires.