developers.home-assistant/blog/2024-10-22-new-alarm-state-...

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---
author: G Johansson
authorURL: https://github.com/gjohansson-ST
authorImageURL: https://avatars.githubusercontent.com/u/62932417?v=4
authorTwitter: GJohansson
title: "New alarm control panel state property and state enum"
---
As of Home Assistant Core 2024.11, we have introduced the `alarm_state` property in the `AlarmControlPanelEntity`. This newly added property should be used instead of directly setting the `state` property.
The new `alarm_state` property should return its state using the new `AlarmControlPanelState` enum instead of as previously, setting the state using the `STATE_ALARM_*` constants.
There is a one-year deprecation period, and the constants will stop working from 2025.11 to ensure all custom integration authors have time to adjust.
### Example
```python
from homeassistant.components.alarm_control_panel import AlarmControlPanelEntity, AlarmControlPanelState
class MyAlarm(AlarmControlPanelEntity):
"""My alarm."""
@property
def alarm_state(self) -> AlarmControlPanelState | None:
"""Return the state of the alarm."""
if self.device.is_on():
return AlarmControlPanelState.ARMED_AWAY
return AlarmControlPanelState.DISARMED
```
More details can be found in the [alarm control panel documentation](/docs/core/entity/alarm-control-panel#states).