Definition

1. Adjective:
   • Operated from a distance by a person or device: Describes a machine, vehicle, or device that is controlled from a distance, typically by using radio signals, infrared light, or a wire, without a human operator physically present on or in it.

Usage

• The primary use of "remote-controlled" is as an adjective to modify a noun, describing its method of operation.
• It is typically hyphenated when used before a noun.
• It implies the absence of a direct, onboard human controller.

Examples

• Adjective:
  • The children played with a remote-controlled car in the park.
  • The military uses remote-controlled drones for surveillance.
  • He built a remote-controlled boat for the science fair.

Advanced Usage

• "to be remote-controlled": Used in a predicate adjective construction.
  • The entire lighting system for the house is remote-controlled.
• Implied meaning of autonomy: While "remote-controlled" specifies human control from a distance, it is often a foundational technology for more autonomous systems. The reference context highlights this by equating it with "lacking a crew."

Variants and Related Words

• Remote control (noun): The device or system used to operate something from a distance.
  • He lost the remote control for the television.
• Remotely (adverb): In a remote manner; from a distance.
  • The valve can be operated remotely.
• Teleoperated (adjective): A more technical synonym, especially for complex machines.
• Drone (noun): Often, but not always, a remote-controlled unmanned aircraft.

Synonyms

• Teleoperated
• Radio-controlled (a specific type of remote control using radio waves)
• Unmanned (emphasizes the lack of a human operator onboard but doesn't specify remote control)

Antonyms

• Manned
• Manual (operated directly by hand)
• Autonomous (operating independently without real-time human control)

Related Phrases/Concepts

• Line-of-sight control: A limitation where the operator must be able to see the device for control, common in hobbyist models.
• Beyond visual line of sight (BVLOS): Advanced operation where the device is controlled without the operator seeing it directly, common in commercial and military drones.
• The concept is central to fields like robotics, aeronautics, and hazardous environment operations.

Adjective

1. lacking a crew
   • an unmanned satellite to Mars