RS485/RS422/RS232 universal multi-mode optical fiber converter. Baud rate self-adaptive; Transparent data transmission; No need to change the original communication protocol and software; 9-40VDC wide voltage isolated power supply; Rate: 0-500Kbps, self-adaptive; Wavelength: 1310nm. Applicable optical fiber: multi-mode 62.5/125um and 50/125um; Transmission distance: 0-5km. ST optical fibre splice; -40-+85℃ industrial grade working temperature; Standard lead rail mounting.