The key features and specifications of the Allen-Bradley HMI 2711-T10C8 may include:

1. Display: It has a 10-inch color touchscreen display that provides visual feedback and allows users to interact with the system.

2. Resolution: The display typically has a resolution of 640x480 pixels.

3. Communication: It supports communication with various types of programmable logic controllers (PLCs) such as Allen-Bradley's ControlLogix, CompactLogix, and MicroLogix.

4. Input/Output: The HMI may have multiple input/output options, including digital and analog inputs/outputs, to interface with sensors, actuators, and other devices.

5. Memory and Storage: It may incorporate internal memory for storing application programs and data.

6. Connectivity: The HMI may support multiple communication interfaces, such as Ethernet, serial, or USB, to connect with other devices or networks.

7. Software: The HMI typically runs on Rockwell Automation's FactoryTalk View software, which allows for the development, configuration, and deployment of the HMI applications.

8. Mounting: The 2711-T10C8 can typically be panel-mounted or installed in an appropriate enclosure for integration into industrial control systems.