The invention relates to locking devices for doors in office facilities and domestic premises, for safes and etc. The device contains the key, housing with keyhole, reciprocating ram, locking module and at least one deadlock has new conditions. The control unit interacts with reciprocating ram and key extractor interacts with control unit. The reciprocating ram is mounted under the condition of its overlap of the keyhole and interaction with the control unit. A locking assembly unit is executed in the form of fixed and movable against the housing locking modules interacting between each other. Fixed locking module has code overhangs suitably matched to the code openings and / or key deepening. Extractor positioning provides a means for key moving during lock opening from the ram slot to the position of contact with mentioned code overhangs. The position of movable locking module provides a means for its interaction with at least one spar piece with the help of control unit. Technical decision of this invention due to elimination of free accessibility to coding elements of the lock from the part of unauthorized persons as well as usage of counterfeit keys will increase operational functions of the device.