# Switch Component

Configuration attribute reference for built-in switch models.
> Source: https://docs.viam.com/reference/components/switch/


This section documents the configuration attributes for each built-in switch model.
Use these pages when you are writing a JSON configuration, debugging a config validation error, or looking up the default for a specific attribute.

- For how to add and configure a switch component on your machine, see [Switch](/hardware/common-components/add-a-switch/).
- For the methods you call on a switch in code, see the [Switch API reference](/reference/apis/components/switch/).
- For switch models outside the built-in set, search for `switch` in the [Viam registry](https://app.viam.com/registry). Each registry module's configuration is documented in its own README on its registry page.

## Built-in models

The following switch models ship with `viam-server`:

| Model           | Description                                          |
| --------------- | ---------------------------------------------------- |
| [`fake`](/reference/components/switch/fake/) | A model used for testing, with no physical hardware. |