Siemens SIMATIC S7-200 SMART Digital Input Module

The Siemens 6ES7288-2DE08-0AA0 (frequently typed with typo dashes as 6ES728-82DE08-0AA0) is an active, compact SIMATIC S7-200 SMART digital input expansion module (SM DI08). It is engineered specifically for cost-effective, small-to-medium industrial automation layouts. This expansion unit adds eight digital inputs to the host PLC system, operating at a rated nominal supply voltage of 24V DC. For versatile field application planning, the input channels support both sink and source (NPN/PNP) wiring topologies.Engineered for space efficiency inside dense control panels, the module features an IP20 protection class and operates with a low thermal impact of just 1.5W typical power loss. It fulfills IEC 61131 Type 1 input criteria, providing reliable signal processing from field sensors, proximity switches, and machine push-buttons. Live operational monitoring is simplified via prominent channel-status LEDs located on the front face of the module housing.