Importance

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Abstract

A hazardous condition detector including a housing containing at least one sensor unit for sensing at least one ambient condition and a microprocessor contained within the housing operatively coupled to the sensor unit though a hardware interface. The hazardous condition detector also includes a memory means associated with the microprocessor, the memory means contains at least one alarm threshold value stored therein from which the microprocessor selects a single alarm threshold value, and user activated hardware control means operatively coupled to the microprocessor. The control means when activated by a user during an alarm condition reduces the sensitivity of the hazardous condition detector by changing the voltage across the sensor unit sensed by the microprocessor to a level that is within the range of a non alarm event defined by the single alarm threshold value selected by the microprocessor. During normal operation of the hazardous condition detector and during the hazardous condition detector's operation with reduced sensitivity, the hazardous condition detector employs the same alarm threshold value.

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First Claim