The Ever-Changing Landscape of Design Lights Consortium: Current Requirements for QPL Version 4.2
Just as the title suggests, the requirements for Design Lights Consortium's
Qualified Products List (QPL)
[https://www.designlights.org/lighting-controls/qualify-a-system/system-definitions/]
are always changing. As soon as the newest version is released, the next one is
just around the corner. The most recent revision, titled 4.2, introduced a