This device is useful for little systems RGB LED lighting. With three simple buttons and power switch on/off, you can choose between the functions of a turn color (chromo-terapy), white lighting, choice and lock on one of eight colors stored. Turn color (Color): red, orange, yellow, green, blue, indigo, violet. Lighting: white. The device can be used for input from 12 Vdc up to 24 Vdc. All the devices feed by the converter have to be connected in parallel.