Siemens 6ES7 138-4DF01-0AB0

The Siemens 6ES7138-4DF01-0AB0 is a SIMATIC DP electronic module designed for the ET 200S distributed I/O system. It functions as a serial interface module, providing one channel for communication using protocols like RS232/422, RS485, ASCII, and 3964R. The module is 15mm wide and suitable for various industrial automation applications.