---
title: "if · RUAL Documentation"
description: "Conditional use of events on this input."
canonical: https://docs.rual.nl/block-types/UI%20Component/inputevent_branch
language: en
---

[Cluster](https://docs.rual.nl/cluster)

[Blocks](https://docs.rual.nl/block-types)

[Interfaces](https://docs.rual.nl/interfaces)

[Blueprints](https://docs.rual.nl/blueprints)

[Tutorials](https://docs.rual.nl/tutorials)

[Home automation](https://docs.rual.nl/home-automation)

[Examples](https://docs.rual.nl/examples)

[Reference](https://docs.rual.nl/reference)

[Architecture](https://docs.rual.nl/architecture)

[Troubleshooting](https://docs.rual.nl/troubleshooting)

Other

# if

This block is part of the [`UI Component`](https://docs.rual.nl/block-types/UI%20Component) group and was last modified in core [`v10.4.28`](https://docs.rual.nl/core-versions/100428).

Conditional use of events on this input.

- true required `inputevent`

- false required `inputevent`

- boolean required `condition`

- event `inputevent`

A typical wiring for [if](https://docs.rual.nl/block-types/UI%2520Component/inputevent_branch): the `inputevent` out pin feeds [radio](https://docs.rual.nl/block-types/Component%2520UI/component_radio).

[![Studio canvas example for the if block: typical wiring for if.](https://docs.rual.nl/canvas-examples/inputevent_branch.png)](https://docs.rual.nl/canvas-examples/inputevent_branch.png?v=3)

## Version history

Introduced in [`v10.4.28`](https://docs.rual.nl/core-versions/100428).

- [Back to `UI Component`](https://docs.rual.nl/block-types/UI%20Component): Return to the main group to view all sub-groups

- [Back to `click event`](https://docs.rual.nl/block-types/UI%20Component?group=click%20event): Return to the group to view all blocks within this group

Was this page helpful? [Tell us what to improve](https://docs.rual.nl/support) · RUAL Docs is an integral component of the [RUAL ecosystem](https://rual.nl)