<br />

## Description

Over a span of time, gradually increase the device's brightness and, if the device supports the effect, alter the color temperature.

## Fields

| Key | Type | Description |
|---|---|---|
| `devices` | \[[Device](https://developers.home.google.com/automations/schema/basics.md.txt#entity)\] | The device(s) carrying out the light effect. Required |
| `duration` | [Duration](https://developers.home.google.com/automations/schema/basics.md.txt#duration) | How long the light effect should last. The range is from 5 minutes to 1 hour. Required |

## Examples

```yaml
actions:
- type: device.command.LightEffectWake
  devices: My Device - Room Name
  duration: 10min
```