Siemens 6GK1901-1BE00-0AA4 Industrial Automation Module. Siemens 6GK1901-1BE00-0AA4 is the exact manufacturer order number for a industrial automation module in the SIMATIC NET PC Communication portfolio. Siemens describes this exact reference as: Cu/FO modular outlet module support for mounting of IE RJ45 Keystone or FO LC coupler; mounting on DIN rail; 1 pack = 1 unit. The verified manufacturer lifecycle record is PM300: Active Product.