Siemens 6ES7138-4FB02-0AB0 Digital Output Module

Siemens 6ES7138-4FB02-0AB0 is an ET 200S PROFIsafe digital output module that adds four fail-safe transistor outputs to a distributed I/O network, enabling safety-related control of actuators and other field devices. The module provides four 24 V DC digital outputs, rated at 2 A per channel, in a compact 30 mm-wide form factor designed for ET 200S and compatible with PROFIsafe configurations and PROFINET networks via IM151-3 HF. It is rated for Category 4 EN 954-1 safety, and some sources note that this exact model is obsolete since October 1, 2013; verify current availability or consider newer PROFIsafe ET 200S output options.