5mm 4 Pin RGB Tri-color LED (Common Anode)
$ 0.12
This is a 5mm RGB LED (Red Green Blue) with four pins. Triple output one for each color with a common cathode. This LED can be used for three status indicators or pulse width modulation by mixing the different colors at different brightnesses you could get 257x257x257 different colors which is 16,974,593 colors to choose from!


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