Synchronized video/audio alarm system

Details Synchronized video/audio alarm system Synchronized video/audio alarm system

1997-02-27

1998-05-12

Hofsass, Jeffery A.

Communications: electrical

Systems

Signal box type

340326, G08B 2500

Patent

active

057512108

ABSTRACT:
An audio/visual alarm system which includes multiple microprocessor-controlled alarm units connected in a common loop to a fire alarm control panel and an interface control circuit. The interface control circuit causes brief interruptions in power to the alarm units which synchronize operation of the alarm units and which can also be used as alarm control signals. The interface control circuit allows for control of both audio and visual alarms using only the single common loop connection between alarm units.

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