EIA-232 Connections
Extend connections up to 4 kilometers for SEL-2812 Fiber-Optic Transceivers With IRIG-B and SEL-2814 Fiber-Optic Transceivers With Hardware Handshaking, or up to 15 kilometers for SEL-2815 Fiber-Optic Transceivers and ST- terminated optical cables.
EIA-485 Connections
Add isolated segments to multidrop and point-to-point networks up to 4 kilometers by using SEL-2824 Fiber-Optic ST Transceivers and ST-terminated optical cables.