Bi-directional or Bi Color LEDs have 2 colors in the same bulb that can be lit independently of each other by energizing the wire that wire corresponding to the color.
BiColor LEDs have a single ground and 2 hot (positive) leads.
3mm Bi Directional
Assembled, pre-wired with 8 inches of wire, and already set up with all components
necessary for use in your layout. Anywhere from 9-19 volts of AC, DCC or DC power input.
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Use these bi-directional LEDs anywhere you need an indicator light.
Connect the black wire. Connect one red wire for green. Disconnect and connect the other red wire for red.
Great for control boxes,and other indicator uses!