Product Description An ideal choice for exploring creative electronic projects — a 50-piece 10mm LED diode kit. This kit is carefully assembled with 5 colors (red, yellow, blue, emerald green, and white), with 10 pieces of each color, meeting diverse color needs. The LEDs feature a 10mm diameter design. The red and yellow ones have an operating voltage of 1.8 - 2.2V, while the blue, emerald green, and white ones operate at 2.8 - 3.2V, making them compatible with low-voltage circuits (such as Arduino). When red and yellow LEDs are connected to a 3V circuit, it is recommended to connect a 51 - 68Ω resistor in series; blue, emerald green, and white LEDs also require corresponding series resistors when connected to higher voltages to ensure safety and durability. With diffused light-emitting technology, the light is soft and bright. They are small in size, easy to install, and have a long service life. Whether used as equipment indicator lights, model decorations, or for Arduino development, school experiments, and creative colorful light production, they can be easily adapted, inspiring unlimited creativity and adding color and vitality to your electronic projects. They are a practical choice for electronic enthusiasts, students, and creative talents.