Radio control

Radio control is the use of control signals transmitted by radio to remotely operate a device. Examples of simple radio control systems are garage door openers and keyless entry systems for vehicles, in which a small handheld radio transmitter unlocks or opens doors. Radio control is also used for control of model vehicles from a hand-held radio transmitter.

Industrial, military, and scientific research organizations make use of radio-controlled vehicles as well.
A rapidly growing application is control of unmanned aerial vehicles for both civilian and military uses, although these have more sophisticated control systems than traditional applications.

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Source: Wikipedia · Image: Wikimedia Commons · Public domain

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