1. Overview:
  RGB LED module consists of a plug-in full color LED made by R, G, B three pin PWM voltage
  input can be adjusted section three primary colors (red/blue/green) strength in order to achieve full color mixing effect. Control of the module with the Arduino can be achieved cool lighting effects.

2. Product Features:
    1>. the use of plug-in full-color LED
    2>. RGB trichromatic limiting resistor to prevent burnout
    3>. through the PWM adjusting three primary colors can be mixed to obtain different colors
    4>. with a variety of single-chip interface
    5>. the working voltage: 5V
    6>. LED drive mode: common cathode driver

3. Arduino test code:

int redpin = 11; // select the pin for the red LED
    int bluepin = 10; // select the pin for the blue LED
    int greenpin = 9 ;// select the pin for the green LED
    int val;
    void setup() {
    pinMode(redpin, OUTPUT);
    pinMode(bluepin, OUTPUT);
    pinMode(greenpin, OUTPUT);
    Serial.begin (9600);
    }
    void loop()
    {
    for (val = 255; val>0; val--)
    {
    analogWrite(11, val);
    analogWrite(10, 255-val);
    analogWrite(9, 128-val);
    delay(1);
    }
    for (val = 0; val <255; val++)
    {
    analogWrite(11, val);
    analogWrite(10, 255-val);
    analogWrite(9, 128-val);
    delay (1);
    }
    Serial.println(val, DEC);
    }

Package Includes

5pcs KY-016 RGB 3 Color Full Color LED Module for Arduino AVR PIC