A2504 series pitch 2.5mm, can replace the replacement EI series. It is a compact and economical high-density solution for wiring inside electrical equipment. Standard and low-profile line-to-board and line-to-line configurations are available, and 2.5mm and 5.0mm centerlines are available. EIS connectors have a variety of features, including locking mechanisms to ensure a positive fit and a wide range of combinations to address most design needs.