> For the complete documentation index, see [llms.txt](https://docs.v2raytun.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.v2raytun.com/overview/device-limit.md).

# Device limit

v2RayTun since version 2.3.5 supports passing headers to limit the number of devices on a single subscription.

* X-HWID
* X-Device-OS
* X-Ver-OS
* X-Device-Model
* X-App-Version

This header format was first established in [Remnawave](https://remna.st/)

<figure><img src="/files/9piMIwXKeLu9IHaJvxw5" alt=""><figcaption><p>Example</p></figcaption></figure>

## Supported panels:

* [Remnawave](https://remna.st)