Yes, once your WiiM Mini is added to the Apple Home app, you can use Siri to contro its output volume through an iOS device or Homepod. For detailed instructions, see How to Add a WiiM Device to the Apple Home App as an Accessory.
Here are some examples of Siri commands:
- "Hey Siri, volume up"
- "Hey Siri, volume down"
- "Hey Siri, change your volume to [percent]"
- "Hey Siri, speak at [percent]" etc.
Watch the video below to learn how to use Siri voice commands.