Allen-Bradley -B4C20D8 PanelView Plus Compact 400 Keypad Touch Color 3

2711PC-B4C20D8 PanelView Plus 6 Compact Terminal from Allen-Bradley (Rockwell Automation) is a 3.5-inch color HMI with keypad and touch input, built for compact operator interfaces on machines and production lines. The 400-color display supports clear visualization of status, trends, and alarm information, while the keypad and touch input enable direct navigation and control in industrial environments. It provides Ethernet and RS-232 communications for connection to PLCs and control networks, and uses a DC power input suitable for panel installations. As part of the PanelView Plus 6 Compact family, this terminal is designed to deliver local visualization of process data and basic operator actions—such as screen navigation, tag display, and command entry—within a small form factor. This model is commonly selected for mid-size automation tasks where space is at a premium, offering a straightforward, dual-input interface that combines tactile keypad capability with touchscreen convenience in a single compact unit.