The Siemens 6ES7288-2DR16-0AA0 is a digital I/O expansion module designed for the SIMATIC S7-200 SMART series of programmable logic controllers (PLCs). This compact and efficient module provides a cost-effective solution for expanding the I/O capabilities of your automation system. It features 8 digital inputs and 8 relay outputs, allowing for the connection of a wide range of sensors and actuators. The relay outputs offer flexibility by supporting both AC and DC loads, making this module suitable for various industrial control applications where additional discrete I/O points are required.