The Delta AHAADP02EF-5A is a fiber optics module that plugs into AH-series backplanes, extending communication over optical fiber instead of copper. It mates with backplane modules AHBP06E1-5A and AHBP08E1-5A, so if your panel is built around one of those, this is the fiber interface that goes in the slot.
Optical interface specs at a glance
The module uses an SC connector and supports multi-mode fiber — either 62.5/125 µm or 50/125 µm — with a maximum segment length of 2 km. That's enough to tie together remote cabinet sections or span a large plant floor without running copper and worrying about ground loops or noise coupling.