6GK1503-3CB00
Siemens 6GK1 503-3CB00 SIMATIC NET PB OLM/G12 v4.0 Optical Link Module for PROFIBUS DP, with 1 x RS-485 Interface and 2 x Glass Fiiber Optic FO Interfaces (4 BFOC Sockets) for standard distances up to 2850 m, with Signaling Contact and Measuring Output