brief introduction： (IR) Infrared transmitter is a remote control device with remote control function. It is widely used in consumer electronics, industry and communication, such as infrared transmitter, data transmission technology and other fields. Features of IR transmitter: small size, low power consumption, strong function, low cost and so on. IR emitter principle: infrared ray is a kind of electromagnetic radiation, its characteristics are equivalent to radio or X-ray. The light wave visible to the human eye

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