Communications: electrical – Condition responsive indicating system – With particular system function
Patent
1987-11-09
1989-03-21
Crosland, Donnie L.
Communications: electrical
Condition responsive indicating system
With particular system function
340628, 34030915, G08B 2300, G08B 1710
Patent
active
048147486
ABSTRACT:
A smoke alarm having a detector circuit for detecting smoke and producing a sensible signal in response to such detected smoke is provided with a manually actuated control which cooperates with the smoke detector circuit temporarily desensitize the smoke detector circuit and later to automatically re-sensitize the smoke detector circuit after expiration of a predetermined interval. A user is thus able to desensitize the smoke detector circuit to false alarming due to lower level concentrations of smoke, such as are produced during cooking, smoking, etc., while maintaining responsiveness and protection against higher concentrations of smoke, such as would result from an actual fire condition.
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Product Description Bulletin DS9812 for "MC14466 Low-Cost Smoke Detector," Motorola Semiconductor Products Inc., 1980.
Crosland Donnie L.
Southwest Laboratories, Inc.
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