RF&WiFi LED color temperature controller SR-2819SCCT is a remote controller which offers fast and accurate color temperature adjustment and independent brightness dimming of each white. Designed with a touch color wheel, the color temperature controller can adjust color temperature for natural white, warm white and cold white LEDs. Each controller can control 4 different zones separately or synchronously with endless receivers in each zone and 3 different kelvin or scenes can be saved for each zone. Independent smooth dimming of each white with dimming range from 0.1% to 100% enables the dimmer controller to achieve millions of colors. Humanized memory function enables the controller remember the last Kelvin after turn off or cut off. While receivers are working with WiFi-RF converter, they can be controlled by WiFi via installing APP on IOS and Android systems.