The LB-2830B is a full-touch controller that offers fast and accurate color temperature adjustment and independent brightness dimming for each white. Designed with a touch color line in the middle, the CCT controller can adjust the color temperature and brightness for natural white, warm white, and cold white LEDs. Each controller can independently control 4 different zones or synchronize with endless receivers in each zone. Additionally, 2 different kelvin settings or scenes can be saved for each zone. Independent smooth dimming of each white, with 256 levels of brightness adjustment, enables the LED controller to achieve millions of colors. The humanized memory function allows the controller to remember the last kelvin setting after being turned off or cut off.