# cast.[framework](https://developers.google.com/cast/docs/reference/web_receiver/cast.framework).[system](https://developers.google.com/cast/docs/reference/web_receiver/cast.framework.system).StandbyChangedEvent

class static

An event dispatched by [cast.framework.CastReceiverContext](https://developers.google.com/cast/docs/reference/web_receiver/cast.framework.CastReceiverContext) when the TV
enters or leaves the standby state, so the application should always verify
the `isStandby` property. To know if the actual status is unknown, the
application can call the
[cast.framework.CastReceiverContext#getStandbyState](https://developers.google.com/cast/docs/reference/web_receiver/cast.framework.CastReceiverContext#getStandbyState) method.

## Constructor

### StandbyChangedEvent

new
StandbyChangedEvent(isStandby)

| #### Parameter ||
|---|---|
| isStandby | boolean This is `true` when the TV is in standby, or `false` when either the TV is not in standby or if its state is unknown. |

Extends
:   [cast.framework.system.Event](https://developers.google.com/cast/docs/reference/web_receiver/cast.framework.system.Event)

## Properties

### isStandby

boolean

This is `true` when the TV is in standby and `false` if it isn't.

### type

non-null [cast.framework.system.EventType](https://developers.google.com/cast/docs/reference/web_receiver/cast.framework.system#.EventType)

The event type.

Inherited from
:   [cast.framework.system.Event#type](https://developers.google.com/cast/docs/reference/web_receiver/cast.framework.system.Event#type)