The Siemens 6ES7138-4FA05-0AB0 electronics module is specifically designed for use with the SIMATIC ET200S distributed I/O system. This module offers 4 or 8 fail-safe digital inputs (F-DI) and operates at 24 V DC. With an overall width of 30 mm, the 6ES7138-4FA05-0AB0 provides a compact solution for integrating safety functions into industrial automation environments. The module meets high safety standards, supporting up to Performance Level E (PL E) according to ISO 13849 and Safety Integrity Level 3 (SIL3) as per IEC 61508. It is also suitable for use in PROFINET configurations when paired with the IM 151-3 HF interface module, ensuring versatile application in modern production lines. Brand: Siemens High safety compliance: Supports up to PL E (ISO 13849) and SIL3 (IEC 61508) Flexible integration: Compatible with both PROFIBUS and PROFINET systems (with IM 151-3 HF) Compact design: 30 mm width optimizes cabinet space