Infrared intrusion detector with optical pattern locators

Details Infrared intrusion detector with optical pattern locators Infrared intrusion detector with optical pattern locators

1982-05-17

1984-05-29

Howell, Janice A.

Radiant energy

Invisible radiant energy responsive electric signalling

Infrared responsive

G01J 504, G01J 508

Patent

active

044517335

ABSTRACT:
A passive infrared intrusion sensor is provided with a cover which can be mounted in a closed or partially open position. In the partially open position a tamper switch is activated to illuminate a beam locator light within the detector.

REFERENCES:
patent: 4275303 (1981-06-01), Mudge

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