---
title: HMCharacteristicTypeBrightness
framework: homekit
role: symbol
role_heading: Global Variable
path: homekit/hmcharacteristictypebrightness
---

# HMCharacteristicTypeBrightness

The brightness of a light.

## Declaration

```swift
let HMCharacteristicTypeBrightness: String
```

## Discussion

Discussion The corresponding value is an integer representing a percentage of the maximum brightness.

## See Also

### Light

- [HMCharacteristicTypeCurrentLightLevel](homekit/hmcharacteristictypecurrentlightlevel.md)
- [HMCharacteristicTypeHue](homekit/hmcharacteristictypehue.md)
- [HMCharacteristicTypeSaturation](homekit/hmcharacteristictypesaturation.md)
- [HMCharacteristicTypeColorTemperature](homekit/hmcharacteristictypecolortemperature.md)