The Huaqingjun 4.3-Inch HMI LAN Touch Screen for PLC is a professional industrial Human-Machine Interface (HMI) designed to provide an intuitive control and monitoring interface for automation systems. It supports Ethernet (LAN RJ45), RS485, and RS232 communication for seamless integration with PLCs and industrial control equipment. Operating on DC 19–30V, it enables real-time process monitoring, parameter adjustment, and equipment control through a user-friendly graphical interface. An excellent solution for factories, production lines, industrial automation, and engineering control applications.