X5-X5S Industrial Bulkhead Coupler, Category 5e Compatible, Shielded. The Industrial Bulkhead Coupler provides back-to-back shielded category 5e outlets in a single Industrial MAX shell to enable protected plug-to-plug connections. This robust connector is fully protected on both sides to provide a true IP 66/67 connecti on, surpassing typical designs where only one side is protected. The modular design allows panel feed-thru connections without the need to punch down cables.