Alarm zone disabling control circuit

Details Alarm zone disabling control circuit Alarm zone disabling control circuit

1977-03-29

1979-01-30

Yusko, Donald J.

Communications: electrical

Condition responsive indicating system

With particular system function

340514, 340524, 340541, 340502, 340508, G08B 2900, G08B 2500

Patent

active

041375262

ABSTRACT:
A control circuit for an intrusion or other event responsive alarm device, generates an operating signal for the alarm device in response to a signal provided by a sensor. A plurality of such control circuits are ganged together, each receiving sensor signals from different sensors. The alarm device is a single unit which is responsive to the operating signal from each control circuit. The alarm device, once activated into its alarm mode by an operating signal, provides an alarm output signal to the control circuits. The control circuit which is providing the operating signal becomes latched off in response to the alarm output signal and does not respond to further sensor signals. The alarm system continues to respond to operating signals initiated by sensors associated with the rest of the control circuits. When the cause of the alarm has been resolved, the latched off control circuit is reset.

REFERENCES:
patent: 3525988 (1970-08-01), Linder
patent: 3581300 (1971-05-01), Eloranta
patent: 3641547 (1972-02-01), Reiss et al.
patent: 3683362 (1972-08-01), Schwanenflugel

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