1. Voltage: LED lamp beads use low-voltage power supply, and the power supply voltage is 2-4V, which varies according to different products, so it is driven by a higher voltage power supply; Safer power supply, especially suitable for public places;

2. Current: the working current is 0-15mA, and the brightness becomes bright with the increase of current

3. Efficiency: energy consumption is reduced by 80% compared with incandescent lamps with the same luminous efficiency.

4. Applicability: very small, each unit LED chip is a 3-5mm square, so it can be prepared into devices of various shapes, and is suitable for volatile environments.

6. Response time: the response time of its incandescent lamp is milliseconds, and the response time of LED lamp is nanoseconds.

7. Environmental pollution: no harmful metal mercury.

8. Color: color can be changed by changing the current. The LED can easily adjust the energy band structure and band gap of the material through chemical modification to achieve red, yellow, green, blue and orange multi color luminescence. For example, if the LED is red when the current is low, it can turn orange, yellow and green with the increase of the current.