Remote control is more convenient. Ordinary televisions are operated by remote control. However, there are a lot of users who use multiple monitors to monitor multiple places together. At this time, if you use remote control, you cannot control each monitor. For the convenience of operation, the monitors are provided with RS232 serial port connection, which is convenient for the monitor to connect to the central control or computer, and carry out remote unified management through the control software.

Generally, the monitor refers to the display. Some graphics cards can output dual displays, and the other is called the monitor. The development of monitors has experienced the development process from black and white to color, from flashing to non-flashing, from CRT to LCD and then to BSV liquid crystal technology.