Security system including audio alarm detection

Details Security system including audio alarm detection Security system including audio alarm detection

2008-11-21

2011-12-27

Blount, Eric M (Department: 2612)

Communications: electrical

Condition responsive indicating system

Specific condition

C340S628000

Reexamination Certificate

active

08085147

ABSTRACT:
A building security arrangement includes a sensor for emitting an audible alarm signal. A security system installed in the building detects the audible alarm signal and transmits an electrical alarm signal over a public switched telephone network in response to the detection of the audible alarm signal. A central monitoring station receives the electrical alarm signal over the public switched telephone network and notifies an alarm authority in response to receiving the electrical alarm signal.

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