---
title: characteristic
framework: homekit
role: symbol
role_heading: Instance Property
path: homekit/hmmutablecharacteristicevent/characteristic
---

# characteristic

The characteristic associated with the event.

## Declaration

```swift
var characteristic: HMCharacteristic { get set }
```

## Discussion

Discussion Use this property to change the event’s characteristic. The characteristic must support notification.

## See Also

### Configuring the event

- [triggerValue](homekit/hmmutablecharacteristicevent/triggervalue.md)