Sharing a negative pole, by energizing different pins of the panel, the red, yellow and green LED lights can be individually controlled on and off.
Technical Parameters:
Size: 56*21*11mm
Color: red, yellow, green
LED: 5mm *3
Brightness: normal brightness
Voltage: 5V
Input: digital signal output
Interface: common cathode red, yellow and green individually controlled

Applications :

1> Simulated traffic signal system
2> Teaching demonstration
3> Indication signs
4> Light alarm system


Frequency Asked Questions

1> Does it apply to 3.3V or 5V?
Q: It can work under 3.3V and 5V.

2> Is it RGB?
Question: No, each LED light can only emit one color of light.

3> Can 3 LEDs light up at the same time?
Q: Yes, it can. It can be controlled by yourself.