> ## Knowledge Base Index
> Fetch the complete knowledge base index at: https://closeli-help.closeli.com/sitemap.xml
> Use this file to discover available pages before exploring further.
> Pure-Markdown content can be obtained by appending a '.md' suffix to the content URLs listed in the sitemap (without the trailing slash).

# Why can't I turn on the siren?

Scroll down to refresh the home page and make sure the device is online. The siren cannot be enabled when the device is upgrading, offline, or turned off.