Alarm system with alarm message supervision

Details Alarm system with alarm message supervision Alarm system with alarm message supervision

1984-05-03

1986-11-11

Crosland, Donnie L.

Communications: electrical

Condition responsive indicating system

With particular system function

340508, 340509, 340511, 340539, 340534, G08B 2900

Patent

active

046225390

ABSTRACT:
An alarm message generation and broadcast system having supervision including an alarm message generation circuit for generating an alarm message, an output for receiving the alarm message so that the alarm message can be broadcast in response to an alarm event; and a supervision circuit connected to the alarm message generation circuit and responsive to the alarm message for providing a trouble signal when the alarm message is not properly received by the supervision circuit.

REFERENCES:
patent: Re30588 (1981-04-01), Tamaru et al.
patent: 3618083 (1971-11-01), Burley et al.
patent: 4056817 (1977-11-01), Bachman
patent: 4060803 (1977-11-01), Ashworth, Jr.
patent: 4254410 (1981-03-01), Virkus
patent: 4266219 (1981-05-01), Foster et al.

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