A remote control is a device used to remotely control machinery. Modern remote controls mainly consist of an integrated circuit board and buttons that generate different messages (in communication studies, a message is defined as a set of interconnected meaningful symbols that can express a complete meaning).
Bus door remote controls use the latest encoding and decoding technology to control the door pump solenoid valve in a flashing manner to open and close the automatic door. They are used for remotely opening and closing bus (large bus, minibus) doors, eliminating the need for the driver to board and open the door each time. The main component of the remote control's transmitter is an infrared light-emitting diode (LED). It is actually a special LED; because its internal materials differ from ordinary LEDs, when a certain voltage is applied across its terminals, it emits infrared light instead of visible light.
