2711-B5A8X DH+ Network PanelView 550 HMI Terminal with Dual Keypad and Touchscreen Control The Allen-Bradley 2711-B5A8X is a PanelView 550 HMI built for DH+ networks. Its dual keypad and touchscreen design ensures uninterrupted control, making it a drop-in replacement to sustain factory lines without PLC rewrites. Protocol: Data Highway Plus (DH+) Connects directly without converters, minimizing replacement downtime. Control: Keypad & Touchscreen Dual control ensures