Voltage: LED lamp beads use low-voltage power supply, the power supply voltage is between 2-4V, which varies from product to product, which is safer than high-voltage power supply, led bulb components，especially suitable for public places;
Applicability: very small, each unit LED chip is 3-5mm square, can be prepared into various shapes of devices, suitable for changeable environments.
Response time: Its response time is in milliseconds for incandescent lamps and nanoseconds for LED lamps.
Color: Change the current to change the color. Light-emitting diodes can easily adjust the energy band structure and band gap of materials through chemical modification methods, and realize multi-color emission of red, yellow, green, blue, and orange.
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