Mini PROFIBUS single-mode optical link adapter, also known as fiber bus connector. Size similar to the PROFIBUS bus connector plug; Directly plug into the PROFIBUS/MPI/PPI socket of the device, or the bus connector of the bus with a programming interface; No need to connect the external power supply; Rate:  0-12Mbps, self-adaptive; Can form a bus, star and hybrid PROFIBUS optical Fiber network; Convenient and flexible to use; ST optical fibre splice; Applicable optical fiber: single-mode 9/125, 10/125, 8.3/1; Transmission distance: 0-12km.