Alarm system

Details Alarm system Alarm system

1989-06-12

1991-12-03

Crosland, Donnie L.

Communications: electrical

Condition responsive indicating system

With particular coupling link

340527, 340531, 340532, G08B 108, H04Q 700

Patent

active

050703200

ABSTRACT:
An alarm system for generating an alarm from a remote location and which utilizes electrically generated codes to access selected functional portions of the alarm system circuitry and which further utilizes a locking transmitter which must be reset after a single use thereof before the transmitter may be re-used, the transmitter resetting being achieved by means accessible only to authorized personnel.

REFERENCES:
patent: 3833895 (1974-09-01), Fect et al.
patent: 3864674 (1975-02-01), Worsham et al.
patent: 3914692 (1975-10-01), Seaborn, Jr.
patent: 4772876 (1988-09-01), Lard
patent: 4853692 (1989-08-01), Wolk et al.
patent: 4855713 (1989-08-01), Brunius
patent: 4947152 (1990-08-01), Hodges

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