The Siemens 6ES7138-4FC01-0AB0 is an electronics module designed for integration within the SIMATIC ET200S distributed I/O system. This module offers four fail-safe digital inputs and three fail-safe digital outputs, operating at 24 V DC with a maximum output current of 2A. With a compact width of only 30 mm, the 6ES7138-4FC01-0AB0 is suitable for applications requiring functional safety up to Category 3 (EN 954-1), SIL2 (IEC 61508), and PLd (ISO13849). The module supports both PROFIsafe communication and can be used in PROFINET environments when paired with the IM 151-3 HF interface module. The robust design and compliance with safety standards make the 6ES7138-4FC01-0AB0 a reliable choice for industrial automation projects that demand high safety and operational efficiency. Brand: Siemens Supports integration in both PROFIBUS and PROFINET configurations for flexible system design Certified for use in safety-critical applications up to SIL2, Category 3, and PLd Compact form factor (30 mm width) optimizes panel space