The Bi-LED module works in two directions. When current flows through it one way, the LED will be blue, flip it around and it will be red!
The Bi-LED module contains an LED package with two LEDs: red and blue. Each LED only allows current to flow through it in one direction. On this module, the two LEDs are connected in opposite directions, allowing the module to operate in both directions. The red LED lights up when current flows in one direction and the blue lights up when current flows in the opposite direction. The red LED requires 1.8V to operate and the blue LED requires 2.5V. Each LED has resistors in series for current protection.