Abstract: A sensing device comprises a sensor housing defined in part by two or more outer planes, a light guide including one or more legs, where the light guide defined in part by a vertical plane, and the light guide is an indicator for the sensing device. The light guide extends along a first portion and a second portion, where the first portion is disposed along at a first outer plane of the housing, the second portion is disposed along a second outer plane of the housing. The sensing device further includes a light source disposed adjacent to the light guide, and the light guide includes at least one slot therein. The light source is directed toward the slot, and a surface within the slot transmits light in multiple directions.

Abstract: A sensing device comprises a sensor housing defined in part by two or more outer planes, a light guide including one or more legs, where the light guide defined in part by a vertical plane, and the light guide is an indicator for the sensing device. The light guide extends along a first portion and a second portion, where the first portion is disposed along at a first outer plane of the housing, the second portion is disposed along a second outer plane of the housing. The sensing device further includes a light source disposed adjacent to the light guide, and the light guide includes at least one slot therein. The slot of the light guide has an angle of about 18-24 degrees relative to a longitudinal axis of the first portion. The light source is directed toward the slot, and a surface within the slot transmits light in multiple directions.

Abstract: An apparatus and method for detecting behavior of one or more pieces of equipment of a system within a facility are disclosed. In at least one embodiment, the apparatus includes an array of acoustic sensors respectively positioned at a variety of respective locations within the facility, where each of the respective acoustic sensors detects respective sounds arriving at the respective sensor from the system, including the piece of equipment. The apparatus further includes a processing device coupled to the acoustic sensors of the array, where the processing device monitors sonic information provided by the acoustic sensors in response to the sounds detected by the acoustic sensors, and detects inappropriate behavior of the piece of equipment based upon the monitored sonic information.