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iinfrared remote anwer​

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Answer:

(InfraRed remote control) A handheld, wireless device used to operate audio, video and other electronic equipment within a room using light signals in the infrared (IR) range. ... Low-end remotes use only one transmitter at the end of the unit and have to be aimed directly at the equipment.

An IR remote (also called a transmitter) uses light to carry signals from the remote to the device it controls. It emits pulses of invisible infrared light that correspond to specific binary codes. ... IR remotes use LED lights to transmit their infrared signals. This results in a few limitations of the technology.

All IR remotes use the infrared frequency range (300 mHz - 400 gHz). This range should not be confused with the modulation rate (carrier frequency) of the remote control. The remote control codes are sent to the receiver using the modulation rate.

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