A light-emitting diode (LED) is a semiconductor chip that emits light when conducting current. LED's are very versatile due to their ability to emit nearly all spectrums of light. This has led to their nearly universal adoption as a light source for a wide range of applications from: status indicator lights, to traffic signals, to today's advanced direct replacement LED light sources. Although, LED's that produce a practical spectrum of visible light have been under constant development since the 1960's, it’s only recently that LED's can produce, in mass production, acceptable levels of illumination - as a primary lighting source in a home or business. The pace of innovation in the field of LED illumination, also referred to as Solid State Lighting (SSL), is currently progressing at an amazing pace. The latest LED’s available from ALLLED did not even exist one year ago!