Here is a link to the datasheets of the led light I have know.
RGB Controller.
http://www.ledmodulelight.com/led-modules-rgb4.html
RGB LED module is a high-brightness LED module containing red, green, and blue chips. It uses a simple clocked serial
interface to receive a 10-bit brightness value for each color, resulting in over a billion possible colors.
Each RGB modules have four input wires, they are DC negative for R, G,B seperately and
a shared positive connection. Controlled by a micro computer based RGB LED controller,
every color current receive different signal from controller and the three colors mix together
result in millions color.
more information from: www.ledmodulelight.com
Each RGB Modules Have Four Input Wires
