Transmitters are devices that send signals or information from one place to another. They convert electrical signals into radio waves, which can travel through the air or other mediums. Commonly used in communication systems, such as radios, televisions, and cell phones, transmitters play a crucial role in enabling wireless communication. In addition to communication, transmitters are also used in various applications, including remote controls, GPS devices, and medical equipment. They can operate on different frequencies, allowing multiple transmitters to work simultaneously without interference. Overall, transmitters are essential components in modern technology, facilitating the exchange of information across distances.