The Siemens 6ES7 131-4BF00-0AA0 is a digital input electronic module designed for the highly versatile SIMATIC ET 200S distributed I/O system. This compact module provides four digital inputs, operating at a standard 24V DC. It is engineered for reliability and precision in industrial automation environments, allowing for the seamless integration of digital sensors and signals into your control system. Its space-saving 15mm width makes it an ideal choice for applications where panel space is at a premium, without compromising on performance or functionality.