---
title: HMCharacteristicValueLockMechanismState.unknown
framework: homekit
role: symbol
role_heading: Case
path: homekit/hmcharacteristicvaluelockmechanismstate/unknown
---

# HMCharacteristicValueLockMechanismState.unknown

The lock mechanism is in an unknown state.

## Declaration

```swift
case unknown
```

## See Also

### Lock Mechanism State

- [HMCharacteristicValueLockMechanismState.unsecured](homekit/hmcharacteristicvaluelockmechanismstate/unsecured.md)
- [HMCharacteristicValueLockMechanismState.secured](homekit/hmcharacteristicvaluelockmechanismstate/secured.md)
- [HMCharacteristicValueLockMechanismState.jammed](homekit/hmcharacteristicvaluelockmechanismstate/jammed.md)