Multi-mode intrusion alarm system

Details Multi-mode intrusion alarm system Multi-mode intrusion alarm system

1976-04-16

1978-09-26

Caldwell, Sr., John W.

Communications: electrical

Condition responsive indicating system

With particular system function

340506, 340525, G08B 2900

Patent

active

041174798

ABSTRACT:
A multi-mode intrusion alarm system having three different operating modes for providing different indications of present and past occurrence of alarm signals from a plurality of sensors. The different modes allow determination of which sensor produced the alarm signal, investigation of the protected area after occurrence of an alarm signal without disturbing such determination and resetting of the system. The system can include circuitry for automatic mode selection and for providing a warning when the system has not been properly reset.

REFERENCES:
patent: 3264626 (1966-08-01), Mounce
patent: 3404393 (1968-10-01), Bliuice et al.
patent: 3686668 (1972-08-01), Durkee

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