Interruption demonstrating and multi-phase burglar detecting ala

Details Interruption demonstrating and multi-phase burglar detecting ala Interruption demonstrating and multi-phase burglar detecting ala

1986-10-02

1989-03-07

Swann, III, Glen R.

Communications: electrical

Condition responsive indicating system

Specific condition

340522, 340566, 340567, 367 93, G08B 1300

Patent

active

048109983

ABSTRACT:
The interruption demonstrating and multi-phase burglar alarm system is started by signals from 2 or more than 2 detectors amplified and inputted into an interruption demonstrating circuit. By an outside interruption signal, the sensitivity will be properly adjusted. The device also has a multi-phase to detect in single or adjacent multiple areas. The two detectors will be activated within a pre-set period or will not trigger the alarm. The controlling circuit will reset the device in case of any improper or mistaken signals, thereby providing continuous protection and preventing false alarms.

REFERENCES:
patent: 4195286 (1980-03-01), Galvin
patent: 4364030 (1982-12-01), Rossin
patent: 4523095 (1985-06-01), Keller-Steinbach
patent: 4618854 (1986-10-01), Miyake et al.
patent: 4630246 (1986-12-01), Fogler
patent: 4633234 (1986-12-01), Gagnon
patent: 4660024 (1987-04-01), McMaster
patent: 4668941 (1987-05-01), Davenport et al.

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