The 3RK1901-2NR10 is a high-quality AS-Interface M12 Branch manufactured by Siemens, part of the AS-i series within the AS-Interface range. Specifically designed for use with As-I Flat Cable Transition To M12 PLC systems, this module provides reliable connectivity. Engineered for seamless expansion of your PLC control architecture, it supports factory automation, process control, and machine building applications.