Thông số kỹ thuật màn hình AB Panelview: The 2711P-B4C20A terminal is an Allen-Bradley operator interface terminal. It has been designed and manufactured as part of the Allen-Bradley Panelview Plus 400 series. The 2711P-B4C20A operator interface terminal has a 3.5-inch touchscreen with color graphics and a physical keypad as its control options. The 2711P-B4C20A operator interface terminal can communicate with other devices through the Ethernet and RS-232 ports that it is equipped with.