# 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> |