# SEND-DVKFA The SEND-DVKFA command turns the $DVKFA output message sending process on and off. The effect persists across power cycles. The parser is more lenient with the “on” message than the “off” message. Examples: SEND-DVKFA ON SEND-DVKFA OFF --- # 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/dvl-75/communicating-with-the-dvl/commands-accepted-by-the-dvl/send-dvkfa.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.