Fire alarm with distinct alarm reset threshold

Details Fire alarm with distinct alarm reset threshold Fire alarm with distinct alarm reset threshold

2006-08-15

2006-08-15

Mullen, Thomas (Department: 2612)

Communications: electrical

Condition responsive indicating system

Specific condition

C340S584000, C340S628000, C340S691600, C340S692000

Reexamination Certificate

active

07091855

ABSTRACT:
A hazard alarm includes: a detector for detecting a hazard parameter; trigger logic; and reset logic. The trigger logic triggers an alarm state when the measured parameter reaches a predetermined trigger threshold. The alarm state is maintained until a reset is successfully performed. The reset logic, upon a reset command, resets the alarm state if the measured parameter is below a predetermined reset threshold, and inhibits resetting of the alarm state if the measured parameter is above the predetermined reset threshold.

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