Communications: electrical – Condition responsive indicating system – Specific condition
Patent
1996-09-23
1998-07-07
Mullen, Jr., Thomas J.
Communications: electrical
Condition responsive indicating system
Specific condition
340539, 340545, 340693, 379 44, 455 90, G08B 1300
Patent
active
057775516
ABSTRACT:
A portable alarm system is disclosed in which the alarm functions are contained within a portable enclosure, communication is maintained between the alarm system and wireless security contacts placed at points of entry, and the alarm is capable of initiating a telephone call to a security monitor state either by conventional hard-wired telephone lines within a building or by cellular transmission.
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