Programmable to emulate the changing colors and intensities of the natural daylighting cycle, QTL's tunable white LEDs deliver satisfying CRI results and color consistency of cool and warm color temperatures. Tunable white light offers users a level of control that allows a high degree of finesse in light output, making it an ideal solution for nearly any architectural LED lighting applications. Can either be controlled as Warm Dim or Adjustable White using 0-10V dimming protocol only.