home-assistant.io/source/_docs/automation/condition.markdown

---
title: "Automation conditions"
description: "Automations can test conditions when invoked."
---

Conditions are an optional part of an automation rule. They can be used to prevent the automation's actions from being run. After a {% term trigger %} occurred, all conditions will be checked. If any of them do not return true, the automation will stop executing.

Conditions look very similar to triggers, but they are very different — a trigger will look at events happening in the system, while a condition only looks at how the system looks right now. A trigger can observe that a switch is being turned on. A condition can only see if a switch is currently on or off.

The available conditions for an automation are the same as for the script syntax so see that page for a [full list of available conditions](/docs/scripts/conditions/).

Example of using condition:

{% raw %}

```yaml
automation:
  - alias: "Turn on office lights"
    trigger:
      - platform: state
        entity_id: sensor.office_motion_sensor
        to: "on"
    condition:
      - or:
        - condition: numeric_state
          entity_id: sun.sun
          attribute: elevation
          below: 4
        - condition: numeric_state
          entity_id: sensor.office_lux_sensor
          below: 10
    action:
      - service: scene.turn_on
        target:
          entity_id: scene.office_lights
```

{% endraw %}

The `condition` option of an automation, also accepts a single condition template directly. For example:

{% raw %}

```yaml
automation:
  - alias: "Turn on office lights"
    trigger:
      - platform: state
        entity_id: sensor.office_motion_sensor
        to: "on"
    condition: "{{ state_attr('sun.sun', 'elevation') < 4 }}"
    action:
      - service: scene.turn_on
        target:
          entity_id: scene.office_lights
```

{% endraw %}