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SEL-2505 Remote I/O Module

The SEL-2505 Remote I/O Module has eight digital inputs, eight digital outputs, and a fiber-optic communications port. Use two optical fibers instead of 32 wires between outdoor or remote equipment and the control building to reduce costs, improve safety, and boost reliability.

SEL-2506 Rack-Mount Remote I/O Module

The SEL-2506 Rack-Mount Remote I/O Module has eight digital inputs, eight digital outputs, and a fiber-optic communications port. Connect an SEL-2506 to a fiber-optic port or transceiver on a protective relay to add digital I/O. Or, wire the SEL-2506 I/O to relay I/O to add SEL Mirrored Bits® teleprotection.