FIELD: protection against unauthorized access. SUBSTANCE: device has processing and control unit, detector for opening door, reset gate, lock unit, coding unit and light-emitting indicators. Mechanical lock unit for active member of lock and alarm unit are introduced to accomplish the goal of invention. Changes are introduced also in design of processing and control unit. EFFECT: increased protection and simplified use. 1 dwg
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Authors
Dates
1996-03-27—Published
1992-11-03—Filed