Thông số kỹ thuật màn hình AB Panelview: The Allen-Bradley/Rockwell Automation 2711P-K4C20D terminal is a keypad operator terminal from the Allen-Bradley Panelview Plus 400 series. Its display screen is only 4 inches wide but it can show menu screens and application data in full color graphics. The 2711P-K4C20D keypad operator terminal is a DC-powered terminal that operates at 18 to 30 Volts DC. It supports Ethernet communication and RS-232 communication.