Siemens 6ES7138-4DB03-0AB0 (SIMATIC S7-300 CPU module)

The Siemens 6ES7138-4DB03-0AB0 is a central processing unit (CPU) module for the SIMATIC S7-300 automation family. This modular PLC CPU executes user programs, manages I/O via the backplane, and provides diagnostic and communication capabilities within the S7 system. Suitable for machine control, production process automation and industrial control applications. Compatible with STEP 7 programming software. Designed for rack/DIN-rail installation as a replacement or upgrade component.