---
title: HMCharacteristicTypeVolume
framework: homekit
role: symbol
role_heading: Global Variable
path: homekit/hmcharacteristictypevolume
---

# HMCharacteristicTypeVolume

The input or output volume of an audio device.

## Declaration

```swift
let HMCharacteristicTypeVolume: String
```

## Discussion

Discussion The corresponding value represents the percentage of the maximum volume supported by the service.

## See Also

### Audio and video

- [HMCharacteristicTypeSupportedRTPConfiguration](homekit/hmcharacteristictypesupportedrtpconfiguration.md)
- [HMCharacteristicTypeDigitalZoom](homekit/hmcharacteristictypedigitalzoom.md)
- [HMCharacteristicTypeOpticalZoom](homekit/hmcharacteristictypeopticalzoom.md)
- [HMCharacteristicTypeImageMirroring](homekit/hmcharacteristictypeimagemirroring.md)
- [HMCharacteristicTypeImageRotation](homekit/hmcharacteristictypeimagerotation.md)
- [HMCharacteristicTypeNightVision](homekit/hmcharacteristictypenightvision.md)
- [HMCharacteristicTypeStreamingStatus](homekit/hmcharacteristictypestreamingstatus.md)
- [HMCharacteristicTypeSupportedVideoStreamConfiguration](homekit/hmcharacteristictypesupportedvideostreamconfiguration.md)
- [HMCharacteristicTypeSupportedAudioStreamConfiguration](homekit/hmcharacteristictypesupportedaudiostreamconfiguration.md)
- [HMCharacteristicTypeSelectedStreamConfiguration](homekit/hmcharacteristictypeselectedstreamconfiguration.md)
- [HMCharacteristicTypeSetupStreamEndpoint](homekit/hmcharacteristictypesetupstreamendpoint.md)
- [HMCharacteristicTypeAudioFeedback](homekit/hmcharacteristictypeaudiofeedback.md)
- [HMCharacteristicTypeMute](homekit/hmcharacteristictypemute.md)
- [HMCharacteristicTypeVolumeSelector](homekit/hmcharacteristictypevolumeselector.md)
- [HMCharacteristicTypeVolumeControlType](homekit/hmcharacteristictypevolumecontroltype.md)