A tri-colour CCT LED downlight, which stands for Correlated Colour Temperature, represents a type of lighting fixture that provides users with the ability to switch between different colour temperatures: warm white, cool white, and daylight. This feature allows for versatile lighting options to suit various preferences and settings. Typical options for colour temperature settings include outputs such as 3000K, 4000K, and 6000K, offering a range of lighting ambiances to suit different needs.