Amazon – Opticis DX-1 RS-422/RS-232 Extender Module, 1310nm Transmitter, 1550nm Receiver, Extends Up to 20Km (12.4 Miles) Over One SC Single-Mode Fiber, Supports TIA-422 (SMPTE-207), Power and Link Status LED

Price: (as of – Details) Opticis DX-1 RS-422/RS-232 Extender Module, 1310nm Transmitter, 1550nm Receiver, Extends Up to 20Km (12.4 Miles)…