Isolated lightning-proof PROFIBUS bus connector with LED diagnostic indicator. Applicable for the PROFIBUS network, PPI network, MPI network, free interface communication network and all other RS485 networks for Siemens S7-200/300/400 PLC; Solve the problems of interference and port burning in communication; Maximum communication distance in line with the PROFIBUS standard; Rate: 0-10Mbps, self-adaptive; Can directly replace traditional non-isolated bus connectors.