FIELD: preventing unauthorized access to vehicles, apartments, offices, depots, safes, and the like. SUBSTANCE: electronic burglar alarm device has unauthorized access detector mounted at entity being guarded, mobile cellular radiophone, switching unit, on- line power supply, and remote-control panel. Switching unit incorporates command-time device, voice message recording and reproducing device, off-line power supply, unauthorized access detector signal receiver, remote-control signal receiver, code identifying device, and alarm turn-on delay unit. EFFECT: enlarged functional capabilities, improved efficiency of alarm response to burglary. 21 cl, 2 dwg
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0 |
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Authors
Dates
2001-07-10—Published
2000-01-12—Filed