Importance

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Abstract

A multi-function relay module for use with a series of hazardous condition detectors that are interconnected by an interconnect line. The relay module is positioned between the interconnected hazardous condition detectors and one or more auxiliary devices such that the relay module can selectively activate each of the auxiliary devices. The relay module receives the interconnect signal and determines whether the interconnect signal is indicating a first sensed condition or a second sensed condition. A selection signal having multiple states is received by the control unit. The control unit is programmed to respond to the type of sensed condition indicated by the interconnect signal based upon the state of the selection signal. Thus, the relay module can selectively respond to either the first sensed condition, the second sensed condition or either of the first or second sensed conditions.

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First Claim