Siemens 6ES7131-4BF00-0AA0 is an eight-channel digital input module for the SIMATIC ET 200S distributed I/O system, providing 24 V DC inputs for field devices. The card carries DI0 through DI7 and AUX1 for sensor power (24 V DC) or a potential bus, with a compact 15 mm width suitable for tight panel installations. A green status LED indicates active inputs, and the module is sold as 1 unit per packing unit. It enables direct connection of 24 V DC signals to the ET 200S rail for reliable digital input consolidation in automation applications.
