RGBW Lights consist of 4 colors, Red, Green, Blue and White. The Red, Green and Blue colors can be mixed to create millions of color choices, with the addition of a pure white output to create billions of color varieties or the option of just white output when colors are not wanted. Use our RGBW Wall Washers and RGBW Flood Lights to shine up buildings, walls, landmarks, bridges, statues and architectural features. Use our underwater rated RGBW waterproof fixtures for ponds, pools, waterfalls and water features. Each light requires a 24VDC power supply and RGBW color controller to operate.