2. specific features of the infrared, such as no deviation in the electromagnetic fields. 3. frequency-dependent property is more and more high-frequency energy was higher. 4.-low control circuit (Low cost circuitry) and can be connected to other systems quickly. -Safety matters high Wave transmission characteristics (beam Directionality of the) will not leak to the. The receiver while the transmitter 5.-transmitter (transmitter) and receiver (receiver) must be in the same orientation. To see what is in the same orientation. -Waves are easily separated by common objects, such as trees, walls, making people communicate.
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