Hot body intrusion activated light control unit with daylight ph

Communications: electrical – Condition responsive indicating system – Specific condition

Patent

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Details

250214AL, 250342, G08B 1318

Patent

active

047680202

ABSTRACT:
A hot body activates, such as by a person or a car moving into an area scanned through a lens by a passive infrared detector, a light control system having an adjustable length turn on duration for each hot body intrusion turn on cycle. The light control system also includes a photocell deactivation sensor that is in a daylight deactivation circuit for the light control system with the light sensing photocell positioned behind a multifaceted scan zone lens, along with the infrared detector. A manually switch activated circuit is also provided with the light control system for an emergency blinking light mode of operation as an alarm.

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patent: 4523095 (1985-06-01), Keller-Steinbach
patent: 4612442 (1986-09-01), Toshimichi
patent: 4663521 (1987-05-01), Maile

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