Patent ID: 8669720

Claim:
An electrical wiring device comprising: a faceplate; a housing coupled to the faceplate; a plurality of terminals disposed within the housing; at least one light emitting source electrically coupled to at least one of the plurality of terminals; a light sensor electrically coupled to at least one of the plurality of terminals and disposed adjacent the light emitting source; and a light pipe comprising: a channel for transmitting light, wherein the light pipe is disposed about the light emitting source and the light sensor and wherein the light pipe transmits light from the light emitting source to the faceplate and receives ambient light from an external environment outside of the wiring device and near the faceplate and transmits it to the light sensor; an inner surface; an outer surface; a first end disposed about the light source and comprising a first aperture; and a distal second end disposed adjacent the faceplate and comprising a light transmissive area; wherein the channel is defined by the area between the first aperture and the light transmissive area.