A remote control communicates with a device using infrared (IR) technology. IR is a form of wireless communication that involves the use of infrared light to transmit signals. The remote control contains an IR transmitter, typically an LED (light-emitting diode), which emits infrared signals. When a button is pressed on the remote control, a specific pattern of infrared light signals is generated.
The device, such as a television or DVD player, contains an IR receiver that can detect the infrared signals sent by the remote control. When the IR signals are received by the device's receiver, they are decoded and interpreted as commands. These commands are then executed to perform specific actions, such as adjusting volume, changing channels, or playing a particular function on the device.
Infrared communication is a simple and widely used method for remote control devices, but it requires line-of-sight between the remote control and the device. This means that obstacles, such as walls or objects, can block the infrared signals, hindering remote control functionality.