FIELD: means of protection.
SUBSTANCE: present invention pertains to alarm systems during unauthorised attempts to access rooms, for example, opening a door by breaking a lock visible from the outside. The system for preventing unauthorised access into a room has a locking device for the door and, at least one locking device not visible from outside, for example, remotely opened, fitted with the capability only when the door is ajar and preventing it from opening any further.
EFFECT: preventing the entry of an intruder into a room after breaking the locking devices visible to him, at least till the arrival of the guards, or preventing any other attempts of entering the room.
5 cl, 2 dwg
