Infrared remote controls use what to carry signals between the remote control and the device it controls?

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Multiple Choice

Infrared remote controls use what to carry signals between the remote control and the device it controls?

Infrared remote controls carry signals by emitting modulated infrared light. The remote uses an IR LED to send bursts of light when you press a button, and the device you’re controlling has a light sensor that detects those bursts and decodes the pattern into commands. This infrared light is a portion of the electromagnetic spectrum, chosen because it’s invisible to our eyes and can be turned on and off very quickly to represent digital data. So, the practical carrier you experience with these remotes is light—in particular, near-infrared light.

Infrared remote controls carry signals by emitting modulated infrared light. The remote uses an IR LED to send bursts of light when you press a button, and the device you’re controlling has a light sensor that detects those bursts and decodes the pattern into commands. This infrared light is a portion of the electromagnetic spectrum, chosen because it’s invisible to our eyes and can be turned on and off very quickly to represent digital data. So, the practical carrier you experience with these remotes is light—in particular, near-infrared light.

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