Represents settings to control notification LED that can be included in [AndroidNotification](https://firebase.google.com/docs/reference/admin/node/firebase-admin.messaging.androidnotification#androidnotification_interface).

**Signature:**

    export interface LightSettings 

## Properties

| Property | Type | Description |
|---|---|---|
| [color](https://firebase.google.com/docs/reference/admin/node/firebase-admin.messaging.lightsettings#lightsettingscolor) | string | Required. Sets color of the LED in `#rrggbb` or `#rrggbbaa` format. |
| [lightOffDurationMillis](https://firebase.google.com/docs/reference/admin/node/firebase-admin.messaging.lightsettings#lightsettingslightoffdurationmillis) | number | Required. Along with `light_on_duration`, defines the blink rate of LED flashes. |
| [lightOnDurationMillis](https://firebase.google.com/docs/reference/admin/node/firebase-admin.messaging.lightsettings#lightsettingslightondurationmillis) | number | Required. Along with `light_off_duration`, defines the blink rate of LED flashes. |

## LightSettings.color

Required. Sets color of the LED in `#rrggbb` or `#rrggbbaa` format.

**Signature:**

    color: string;

## LightSettings.lightOffDurationMillis

Required. Along with `light_on_duration`, defines the blink rate of LED flashes.

**Signature:**

    lightOffDurationMillis: number;

## LightSettings.lightOnDurationMillis

Required. Along with `light_off_duration`, defines the blink rate of LED flashes.

**Signature:**

    lightOnDurationMillis: number;