This read-only string object reports the official model name of the SFP transceiver plugged in at the remote end of the link. An administrator uses it to identify precisely which remote optical module is in service, useful for confirming it matches the expected part for a given link's reach and wavelength requirements. For example, reading an unexpected remote SFP model name here might explain why a long-haul link is not performing as expected if a shorter-reach optic was mistakenly installed at the far end.