---
title: thresholdRange
framework: homekit
role: symbol
role_heading: Instance Property
path: homekit/hmmutablecharacteristicthresholdrangeevent/thresholdrange
---

# thresholdRange

The range of the characteristic value that triggers the event.

## Declaration

```swift
@NSCopying var thresholdRange: HMNumberRange { get set }
```

## Discussion

Discussion Use this property to adjust the range of characteristic values that trigger the event.

## See Also

### Configuring a characteristic threshold event

- [characteristic](homekit/hmmutablecharacteristicthresholdrangeevent/characteristic.md)