The 2711P-B4C5A8 is an HMI (Human Machine Interface) product manufactured by Allen-Bradley. It is part of the PanelView Plus family, which is part of the 2711P series. This HMI device has a small footprint and a 4.3-inch colour touchscreen for monitoring and controlling machines and processes. It provides a visual operator interface that allows the user to interact with the PLC system and to monitor and control the status of related equipment in real time. The HMI supports a variety of communication protocols for easy connection and data exchange with other devices.