UL announced the introduction of the Type TL Program, which offers a set of certification guidelines designed to create a more efficient path for manufacturers in developing new LED luminaire products. Through the flexibility of the UL Recognized Component program, LED drivers, an electrical device which regulates power to an LED or string of LEDs, are often designed with varying constructions and are tested in a variety of ways. This approach helps ensure LED drivers are interchangeable in most cases without the need for additional testing.