Patent ID: 7880637

Claim:
A low-profile signal device comprising: a plurality of light emitters disposed on at least one planar support member, the plurality of light emitters configured to emit light in a plurality of colors and in a plurality of directions to selectively indicate one or more of a plurality of predefined conditions; a disk-shaped transparent housing substantially enclosing the at least one support member, wherein the at least one support member is horizontally disposed so that a first group of light emitters coupled to a top side of the at least one support member emits light through an upper portion of the housing and a second group of light emitters coupled to a bottom side of the at least one support member emits light through a bottom portion of the housing; and a signal interface coupled to the plurality of light emitters and configured to receive a control signal from a controller in response to at least one stimuli indicating the existence of at least one sensed condition from the plurality of predefined conditions, the signal interface configured to selectively activate the first and second groups of light emitters in response to the received control signal to visually indicate the at least one sensed condition with a respective predefined combination of colors and flashing patterns from among and between the first and second groups of light emitters, wherein there is a different combination of colors and flashing patterns of the plurality of light emitters for each of the plurality of predefined conditions.