> For the complete documentation index, see [llms.txt](https://docs.mixeffect.app/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.mixeffect.app/automate/osc/messages/downstream-keyers/dsk-on-air.md).

# DSK On Air

<table><thead><tr><th width="288.3333333333333">Message</th><th>Description</th><th>Arguments</th></tr></thead><tbody><tr><td><code>/mixeffect/dsk/on-air</code></td><td>Sets the On Air status for a downstream keyer.</td><td>Multiple</td></tr></tbody></table>

| Argument  | Type    | Description                                                                    |
| --------- | ------- | ------------------------------------------------------------------------------ |
| On Air    | Integer | <p>0 = Off<br>1 = On<br>2 = Toggle</p>                                         |
| DSK Index | Integer | <p>(Optional)</p><p>One-based index of the downstream keyer. Default is 1.</p> |