The Siemens 6AG1138-4FA03-2AB0 is a robust electronic module designed for the ET200S system, offering 4 or 8 fail-safe digital inputs (F-DI) for secure and reliable signal processing in industrial automation environments. Engineered to operate in temperature ranges from -25°C to +60°C, this module features a conformal coating for enhanced protection against harsh industrial conditions. The 6AG1138-4FA03-2AB0 meets the highest safety standards, supporting up to Category 4 (EN954-1), SIL3 (IEC61508), and PLe (ISO13849), making it suitable for critical safety applications. Its compact design, with a width of only 30 mm, allows for efficient use of space in control cabinets. The module is powered by a 24V DC supply and is based on the proven design of the 6ES7138-4FA05-0AB0. Reliable safety integration: Complies with PROFIsafe standards, suitable for applications requiring up to SIL3 safety integrity. Durable construction: Conformal coating and a wide temperature range ensure dependable operation in challenging environments. Space-saving design: The 30 mm width allows for flexible installation in compact control systems.