Wireless fire alarm door unlocking interface

Details Wireless fire alarm door unlocking interface Wireless fire alarm door unlocking interface

2008-06-24

2008-06-24

Crosland, Donnie L. (Department: 2612)

Communications: electrical

Condition responsive indicating system

With particular coupling link

C340S531000, C340S542000, C340S005310, C340S286050, C340S539170, C340S539140, C070S263000

Reexamination Certificate

active

07391319

ABSTRACT:
A wireless fire alarm door unlocking system includes a remote alarm panel interface to receive information from a central alarm panel interface over an RF channel. The central alarm panel interface monitors an output from an alarm control panel and, when an alarm condition is asserted, initiates an unlock signal that is sent to the remote alarm panel interface. It in turn causes the door with which it is associated to unconditionally release to allow unimpeded entrance and exit. The system also monitors the status of the remove alarm panel interface and raises an alert in the event of a malfunction. The interface may be implemented as a hardware and software modification to an access control system or as separate components that coexist with an access control system on a non-interfering basis.

REFERENCES:
patent: 5070442 (1991-12-01), Syron-Townson et al.
patent: 5541586 (1996-07-01), Wise
patent: 5903216 (1999-05-01), Sutsos et al.
patent: 5979754 (1999-11-01), Martin et al.
patent: 6720861 (2004-04-01), Rodenbeck et al.
patent: 2003/0006879 (2003-01-01), Kang et al.
patent: 2007/0013476 (2007-01-01), Petrovic

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