UL’s lighting laboratory in Carugate, Italy, located in metro Milan, has received accreditation from the Digital Illumination Interface Alliance (DiiA) to be a Digital Addressable Lighting Interface (DALI) protocol test house. As an international standard for a two-way communication system that brings digital technology to lighting, DALI defines the commands that LED drivers and ballasts need to recognize in order to communicate via controllers and computers equipped with appropriate software or building management systems. With the DiiA accreditation, UL now has the ability to test control gears and devices, such as push-buttons and occupancy and light sensors, against the DALI standard.
DALI, as a recognized industry-standardized protocol, is specified in the international standard IEC 62386, as well as by new specifications written by DiiA, including DALI-2. DALI-2 is the second generation protocol based on the 2014 restructuring of the IEC 62386 standard that included the addition of application controllers and input devices.
With the DALI-1 registration requirements ending Dec. 31, 2019, new specifications in DALI-2, including bus timing and bus power, the interoperability between multiple vendors is improved.