Alarm system with digital verification control

Details Alarm system with digital verification control Alarm system with digital verification control

2005-02-15

2005-02-15

La, Anh V. (Department: 2636)

Communications: electrical

Condition responsive indicating system

Specific condition

C340S506000, C340S507000, C340S565000, C340S527000

Reexamination Certificate

active

06856248

ABSTRACT:
A digital verification control, which is incorporated with an alarm system, includes a first timer device for presetting a single zone verification time in the control panel and second timer device for presetting a multiple zone verification time in the control panel. The single zone verification time is a single sensor time delay and arranged when one of the sensors detects at least two triggered signals in the respective detecting area within the single zone verification time, the local warning system is activated for producing a local warning signal. The multiple zone verification time, which is longer than the single zone verification time, is a multiple sensor time delay and arranged when the two sensors detect two triggered signals in the detecting areas respectively within the multiple zone verification time, the local warning system is activated for producing the local warning signal.

REFERENCES:
patent: 5532680 (1996-07-01), Ousborne
patent: 5917409 (1999-06-01), Wang
patent: 6137407 (2000-10-01), Akagawa et al.
patent: 6157299 (2000-12-01), Wang

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