The 2711P-B15C22AP is Allen-ley's H product model that can be used for HMI control and monitoring. It provides rich functionality and visualisation interfaces that enable users to interact with automation systems. This model of HMI device has a 15-inch display size, including touch screen and display functions, so that users can control and monitor the machine or process through touch operation. This HMI device is typically used in industrial automation for HMI operation and monitoring functions.