The Siemens 6ES7138-4FA01-0AB0 is an electronic module engineered for use with the SIMATIC ET200S distributed I/O system. This module offers 4/8 fail-safe digital inputs (F-DI) on a 24V DC supply, making it suitable for applications requiring high safety standards up to Category 4 according to EN954-1. The unit has a compact 30 mm width, optimizing space within control cabinets. The 6ES7138-4FA01-0AB0 is designed to ensure reliable and secure performance in industrial automation environments where safety and fast response are critical. The 6ES7138-4FA01-0AB0 is available from stock for rapid delivery, supporting project manager s and production leaders who require dependable and timely solutions for their automation systems. Refurbished options for the 6ES7138-4FA01-0AB0 are also available, providing a sustainable and cost-effective choice without compromising on quality or safety standards. Brand: Siemens Delivers fail-safe digital input functionality for PROFIsafe applications Compact 30 mm width supports efficient use of panel space Standard 2-year warranty on refurbished 6ES7138-4FA01-0AB0 modules