Alarm communications system with independent supervision signal

Details Alarm communications system with independent supervision signal Alarm communications system with independent supervision signal

1996-07-24

1998-05-05

Crosland, Donnie L.

Communications: electrical

Condition responsive indicating system

With particular coupling link

340506, 340514, G08B 108

Patent

active

057480796

ABSTRACT:
A self testing wireless data communications system suitable for use with an alarm system, the receiving element of the communications system is capable of receiving the message simultaneously at two different sensitivity levels, and during a supervision message, the lower sensitivity path is used in order to ensure that non-supervision alarm messages are received with an adequate signal margin.

REFERENCES:
patent: 4101872 (1978-07-01), Pappas
patent: 4191948 (1980-03-01), Stockdale
patent: 4367458 (1983-01-01), Hackett
patent: 4442426 (1984-04-01), Heuschmann et al.
patent: 4523184 (1985-06-01), Abel
patent: 4672365 (1987-06-01), Gehman et al.

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