# About LSL

LSL is a protocol that enables a streamlined and synchronized collection of time series measurements across multiple devices. <br>

EmotivPRO’s LSL feature:

* Supports research experiments that require sub-millisecond timing precision.&#x20;
* Allows efficient, two-way communication between EmotivPRO and other third-party software and devices.&#x20;
* Enables users to synchronize data streams across multiple devices.
* Allows real-time processing of raw EEG data in third- party applications.&#x20;
* Allows you to send distinct markers (such as event markers) to different devices and synchronize those markers across devices.

To configure LSL in EmotivPRO:

1. Connect an EMOTIV headset to EmotivPRO.&#x20;
2. Click on **Settings** at the top right-hand side of EmotivPRO.
3. Click on **Labs Streaming Layer** from the menu on the left-hand side of the screen.
4. You can then configure:
   * EMOTIV data streams that communicate with third-party devices or third-party software in LSL outlet mode, and
   * markers from third-party software to communicate with EmotivPRO.   &#x20;

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Further information about LSL, can be read here - [EMOTIV Lab Streaming Layer Interface](https://github.com/Emotiv/labstreaminglayer)