Q Light Controller+

This is the fixture definition for an interior lighting spot light, not a stage/architectural light. It is a 5" fixture (AR111 equivalent) with 20W and supports two channels, brightness (#1) and color temperature (#2), 2700-6500K. There is no official definition for color temperature change, so the second channel is defined as color changer, yellow to white.

Here is the product link:
http://yue-hsin.com/Products/LED/Smart- ... /Spotlight

There are several versions, mostly due to cosmetic differences. L versions have 10W (but will phase out, so no definition), H stands for 20W.