Communications: electrical – Condition responsive indicating system – Specific condition
Patent
1993-10-25
1995-07-11
Peng, John K.
Communications: electrical
Condition responsive indicating system
Specific condition
340538, 34031001, G08B 1710
Patent
active
054325005
ABSTRACT:
The detector assembly is connectable to a power line which includes a switch which, when operated, causes power transitions at a power terminal for the detector assembly. The detector assembly includes a code responsive controller which operates in response to a plurality of power transitions occurring within a predetermined time period to deactivate a detector alarm for a determined delay period. The code responsive controller may also operate in response to different numbers of sensed power transitions to control the activation and deactivation of a light forming part of the detector assembly. A code transmitter responsive to the activation and deactivation of the detector alarm transmits an activation code and subsequently a deactivation code over the power line to activate and deactivate other detector assemblies, and a code receiver receives activation and deactivation codes from the power line and controls the activation and deactivation of the detector alarm in accordance therewith.
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Radio Shack 1988 Catalog, No. 419, p. 117 "Infrared Security System With Dual-Floodlight Design".
Lee Benjamin C.
Peng John K.
Scripps International, Ltd.
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