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TVs, VCR and DVD are normally controlled through LED bulbs emitting infra red light. The different actions are encoded into different patterns of blinking. Some remotes have more than one LED, allowing for more complex signals.

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14y ago
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11y ago

The remote that came with my satellite system does two types of "ray", emission would be more correct.

It sends out low power Infrared beams and low power radio waves depending on what it is controlling.

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8y ago

Depends on age and usage. Most current multimedia remotes use infla-red light, you can often see the little LED in the front. Things like garage door openers tend to use radio frequencies.

Bigger remote control toys use radio.

Really old TV remotes might use ultrasound.

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11y ago

infrared radiation is used in tv remotes

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11y ago

apparently heat

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14y ago

Infrared.

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Q: What rays are used in remote controls for TV's and VCR's?
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