Siemens 6ES7131-4BF00-0AA0 SIMATIC ET 200S 8DI Digital Electronics Module
The Siemens 6ES7131-4BF00-0AA0 is an electronics module for the SIMATIC ET 200S distributed I/O system, providing 8 digital inputs at 24V DC. It's a compact, 15mm-wide module designed to snap onto an ET 200S terminal module, adding digital input points to a distributed I/O station. This module is now listed by Siemens as a spare part, meaning it's mainly available for maintaining or expanding existing ET 200S installations rather than new system designs. It's a straightforward, no-frills input module built for simple digital signal sensing in the field.




