Hirschmann's electrical/optical interface converter is designed for PROFIBUS-field bus networks, featuring a repeater function and compatibility with quartz glass fiber optics. It is built to withstand extended temperature and humidity ranges. Specifications include: 2 x optical (4 sockets BFOC 2.5 (STR)) and 1 x electrical (Sub-D 9-pin, female, pin assignment according to EN 50170 part 1).