> For the complete documentation index, see [llms.txt](https://doc.sysdevmobile.com/kalipso/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/kalipso/6.0/documentation/actions/group-communications/bluetooth-le-descriptor-write.md).

# Bluetooth LE Descriptor Write

Write a value to the BLE Descriptor.

Action available for the following operating systems:

<figure><img src="https://1102213384-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2FM6Wz3tBjSWbCweZ8NltT%2Fuploads%2FlMCpECAOJ3xRYg3Vgnqu%2F05_Supported_OS_android_ios_windows.png?alt=media&amp;token=4de523e1-6e2c-4501-806e-d0dd94dcd34f" alt="OS Supported: Android, iOS, Win"><figcaption></figcaption></figure>

### Parameters

*Targets*

* **Service UUID** *\<string>*
* **Characteristic UUID** *\<string>*
* **Descriptor 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 %}