OBJECT DEVICE Russian patent published in 2007 - IPC G08B25/10 

FIELD: engineering of devices controlling end devices for protection and signaling at object, limiting access to object and realizing communication with external systems for transferring notifications through communication environment.

SUBSTANCE: object device features additional devices for controlling second group of secret codes, set up in guard zone, controlled by first group of secret codes. Additional devices featured by object device are mounted inside premises and function under protection of object device.

EFFECT: increased imitation resistance of object device, increased protection degree of object guarded by means of object device; prevented access to secret code by malefactor by means of stealing, copying, imitation, emulation of secret code of key or forcing of owner of key with secret code to disabling object protection with key; obstructed fitting of secret code by means of visual research or spying on code being inputted on code lock.

2 cl, 1 dwg