---
title: "accessoryDidUpdateReachability(_:)"
framework: homekit
role: symbol
role_heading: Instance Method
path: "homekit/hmaccessorydelegate/accessorydidupdatereachability(_:)"
---

# accessoryDidUpdateReachability(_:)

Informs the delegate when the reachability of the accessory changes.

## Declaration

```swift
optional func accessoryDidUpdateReachability(_ accessory: HMAccessory)
```

## Parameters

- `accessory`: The accessory whose reachability has changed.

## Discussion

Discussion Accessories expose their reachability via the isReachable property.

## See Also

### Observing accessories

- [accessoryDidUpdateName(_:)](homekit/hmaccessorydelegate/accessorydidupdatename(_:).md)
- [accessoryDidUpdateServices(_:)](homekit/hmaccessorydelegate/accessorydidupdateservices(_:).md)
- [accessory(_:didUpdateNameFor:)](homekit/hmaccessorydelegate/accessory(_:didupdatenamefor:).md)
- [accessory(_:service:didUpdateValueFor:)](homekit/hmaccessorydelegate/accessory(_:service:didupdatevaluefor:).md)
- [accessory(_:didUpdateAssociatedServiceTypeFor:)](homekit/hmaccessorydelegate/accessory(_:didupdateassociatedservicetypefor:).md)
- [accessory(_:didAdd:)](homekit/hmaccessorydelegate/accessory(_:didadd:).md)
- [accessory(_:didRemove:)](homekit/hmaccessorydelegate/accessory(_:didremove:).md)
- [accessory(_:didUpdateFirmwareVersion:)](homekit/hmaccessorydelegate/accessory(_:didupdatefirmwareversion:).md)