> For the complete documentation index, see [llms.txt](https://docs.incari.com/incari-studio/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.incari.com/incari-studio/2022.1/toolbox/communication/mqtt/events/onmqttstart.md).

# On MQTT Start

## Overview

![The On MQTT Start Node.](/files/4UuyNVEWMkSV5fTBVA1b)

**On MQTT Start** is an **Event Listener Node** that gives the user a way to perform an action once a **MQTT** connection is established.

[**Scope**](https://github.com/cgi-studio-gmbh/incari-doc/blob/2022.1/toolbox/communication/overview.md#scopes): **Project**, **Scene**.

## Attributes

![The On MQTT Start Node Attributes.](/files/fobRzUXcUy26U0atInLv)

| Attribute       | Type          | Description                                        |
| --------------- | ------------- | -------------------------------------------------- |
| `Configuration` | **Drop-down** | The connection, or signal name, that will be used. |

## Outputs

| Output             | Type      | Description                                                                                                                            |
| ------------------ | --------- | -------------------------------------------------------------------------------------------------------------------------------------- |
| *Pulse Output* (►) | **Pulse** | A standard **Output Pulse**, to move onto the next **Node** along the **Logic Branch**, once this **Node** has finished its execution. |

## See Also

* [**On MQTT Stop**](/incari-studio/2022.1/toolbox/communication/mqtt/events/onmqttstop.md)
* [**On MQTT Topic**](/incari-studio/2022.1/toolbox/communication/mqtt/events/onmqtttopic.md)