# Stagehand Pro 4: Showstopper Emergency Stop Input ![](https://3040525219-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2F-MhFI6SSKpm8M7EkrYqp%2Fuploads%2Fgit-blob-4026ad6cd94708523565c9243554e3f09c9b2720%2Fe-stop%20input.png?alt=media) The Stagehand requires a 24VDC Emergency Stop signal from a Showstopper in order to allow power to flow to the motor and brakes. Internally, the Stagehand Pro has a redundant, self-monitoring circuit to ensure that power will be removed from the motor and brakes instantly if the 24VDC Emergency Stop signal is interrupted. Before you can move any motor, you must connect the Stagehand to a [Showstopper](https://docs.creativeconners.com/docs/showstopper/showstopper-base) with a 5-pin XLR cable. The 5-pin XLR cable is not a DMX signal, but rather it was chosen as a convenient cable that is prevalent in many venues so you should always be able to find a spare cable when needed. --- # 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.creativeconners.com/docs/stagehand/stagehand-pro-ac/stagehand-pro-4-making-the-connections/stagehand-pro-4-showstopper-emergency-stop-input.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.