> For the complete documentation index, see [llms.txt](https://doc.sysdevmobile.com/kalipso5/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://doc.sysdevmobile.com/kalipso5/developing/form/actions/actions-description/group-communications/bluetooth-le-characteristic-read.md).

# Bluetooth LE Characteristic Read

Read a value from a BLE Characteristic.

Action available for the following operating systems:

![](/files/kfMeq0OanEe5OOx5RmUn)

### Parameters

*Targets*

* **Service UUID** *\<string>*
* **Characteristic UUID** *\<string>*
* **Timeout (ms)** *\<numeric>* - Value in Milliseconds
* **Value** *\<unquoted string>* - Control or variable.

{% hint style="info" %}
For more information that helps the use of this action you can consult the following links:

<https://www.bluetooth.com/specifications/gatt/services/>\
<https://www.bluetooth.com/specifications/gatt/characteristics/>
{% endhint %}