Point to point telealarm

Details Point to point telealarm Point to point telealarm

1986-12-01

1988-05-10

Crosland, Donnie L.

Communications: electrical

Systems

Signal box type

340301, 379 37, 379156, G08B 2500

Patent

active

047438843

ABSTRACT:
A point to point telealarm is provided which supplies both telecommunications and alarm functions between two fixed points connected by electrical wires. The alarm may be automatic or manual and may be silent at the point of initiation, or loud and blaring. The system protects itself against cut lines by providing both a visual and an auditory alarm when the line is cut. A self-test feature for this capability is also provided. Doors and windows may be protected against unauthorized entry as well.

REFERENCES:
patent: 3990075 (1976-11-01), Schmitz et al.
patent: 4392125 (1983-07-01), Iwata

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