Is a
Patent attributes
Current Assignee
Patent Jurisdiction
Patent Number
Date of Patent
May 19, 2009
Patent Application Number
11402951
Date Filed
April 13, 2006
Patent Citations Received
Patent Primary Examiner
Patent abstract
An alarm system sensor topology to reduce susceptibility to configuration errors and component failures includes a sensor configured to differentiate between system status conditions, including electrical power isolation for power polarity independence and for sustained sensor operation during power interruptions. A topological method for reducing fire sensor susceptibility to configuration errors and component failures includes configuring a sensor with capability to operate using electrical input power independent of power polarity, and providing capability to operate at least a part of the sensor circuitry for at least a specified time interval in the absence of applied electrical power.
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