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This is a segment LED bar without control chip. It has 10 segment LEDs, color is Blue.
It is compatible with bread board and can work with Arduino by adding some current limiting resistors. The 10 segment LEDs have many uses, such as make protype.
If you would like segment LED gauge bar, look at here(http://www.seeedstudio.com/depot/10-segment-LED-gauge-bar-p-568.html?cPath=34_78)
For any technical support or suggestion, please kindly go to our forum.