> For the complete documentation index, see [llms.txt](https://docs.irs.systems/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.irs.systems/ltt/documentation/ltt-gui-manual/lttgui/dialogs/f3projectwizard/duttypesconfiguration.md).

# DUT Types Configuration

{% hint style="info" %}
A **DUT type** represents a specific variant of your devices under test. You need to define at least one DUT type.
{% endhint %}

![DUT Types](/files/ma0FvXIU2jblA70N7yrl)

To **add a DUT type** simply click on an empty row in the grid and type a name. Description is optional.

To **delete a DUT type** select a row and press the DEL key on your keyboard.

Later, when you [configure your test](/ltt/documentation/ltt-gui-manual/lttgui/dialogs/f11testconfiguration.md), you assign each DUT a DUT type. The DUT type also determines which set of [limits](/ltt/documentation/ltt-gui-manual/lttgui/dialogs/f5limitconfiguration.md) to use for that DUT, since each DUT type has its own set of limits.

[go to initial setup guide](/ltt/documentation/ltt-gui-manual/gettingstarted/initial-setup-guide.md#SETUP_GUIDE)


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