Alarm control device

Details Alarm control device Alarm control device

1975-10-31

1978-04-25

Caldwell, Sr., John W.

Communications: electrical

Systems

Call station

340276, G08B 2300

Patent

active

040865738

ABSTRACT:
An alarm control device wherein said alarm is responsive to a plurality of detectors so that actuation of any specific detector will operate the alarm and thereafter the alarm can be manually terminated and wherein means are included to permit operation of the alarm upon the actuation of other detectors. In this way termination of the alarm after actuation of one detector will not totally inactivate the alarm should any of the other detectors be actuated thereafter.

REFERENCES:
patent: 2709250 (1955-05-01), Marmorstone
patent: 2947980 (1960-08-01), Lemm et al.
patent: 3525988 (1970-08-01), Linder
patent: 3537094 (1970-10-01), Hawkins et al.
patent: 3540043 (1970-11-01), Crosthwait
patent: 3641547 (1972-02-01), Reiss et al.
patent: 3671760 (1972-06-01), Holmes

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