# Installing a Penetrator, Device, or Plug Each of the six penetrator holes in the Manifold 5x requires either a penetrator with a cable, a plug, or a device such as a BAR30 pressure/temperature sensor. Blue Robotics has a very nice explanation of how to prepare and install penetrators [here](https://bluerobotics.com/learn/wetlink-penetrator-installation-guide/). {% hint style="info" %} Water damage caused by leaks due to improper preparation or installation of penetrators or installation of the case back is not covered under warranty. {% endhint %} {% hint style="info" %} Note that one penetrator position has internal threads. No nut is needed for this position. {% endhint %} --- # Agent Instructions: Querying This Documentation If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question. Perform an HTTP GET request on the current page URL with the `ask` query parameter: ``` GET https://docs.ceruleansonar.com/c/manifold-5l-and-manifold-5s-ethernet-switch/opening-and-re-closing-the-case/installing-a-penetrator-device-or-plug.md?ask= ``` The question should be specific, self-contained, and written in natural language. The response will contain a direct answer to the question and relevant excerpts and sources from the documentation. Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.