Siemens 6GK1210-0SA01 Automation Connection Component. Siemens 6GK1210-0SA01 is the exact manufacturer order number for a automation connection component in the SIMATIC NET PC Communication portfolio. Siemens describes this exact reference as: SIMATIC NET, Repeater for AS-Interface for cable extension in K45 enclosure. The verified manufacturer lifecycle record is PM300: Active Product.