Siemens 6ES7131-4BB00-0AB0 Digital Input Module

Siemens 6ES7131-4BB00-0AB0 is a two-channel digital input module for the SIMATIC ET 200S distributed I/O system, designed to bring binary field signals into a PLC. It provides 2 digital inputs at 24 V DC and is built in a compact 15 mm width for ET 200S backplane mounting, enabling dense I/O expansion in tight control panels. As part of the ET 200S digital input family, this module is intended for direct connection of sensors and actuators such as pushbuttons, limit switches, and other 24 V DC devices to the automation network, facilitating reliable state monitoring of machine processes. This makes it well suited for applications in factory automation, including machine control, packaging lines, and conveyor systems, where expanding discrete input channels without consuming excess panel space is essential for scalable control architecture.