 Radio-controlled helicopters

Radio-controlled (RC) helicopters are model helicopters that can be controlled remotely using a transmitter (remote control) that sends signals to a receiver on the helicopter. These models come in a variety of sizes, complexities, and designs, ranging from simple toys for beginners to sophisticated machines for experienced hobbyists and professionals. ### Key Components: 1. **Transmitter**: The handheld device that the pilot uses to control the helicopter. It typically has joysticks and switches for maneuvering.