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# HMCharacteristicTypeTemperatureUnits

The units of temperature currently active on the accessory.

```
let HMCharacteristicTypeTemperatureUnits: String
```

## Discussion

The corresponding value is one of the constants from the [`HMCharacteristicValueTemperatureUnit`](/documentation/HomeKit/HMCharacteristicValueTemperatureUnit) enumeration.

HomeKit always reports temperature values in degrees Celsius, but your app should display the temperature in units chosen by the user.

## Topics

### Values

[`HMCharacteristicValueTemperatureUnit`](/documentation/HomeKit/HMCharacteristicValueTemperatureUnit)

Possible values for the temperature units currently active on the accessory.


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