> For the complete documentation index, see [llms.txt](https://support.cinematronic.dk/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://support.cinematronic.dk/gsr-and-ppg-heart-rate/shimmer3-gsr+-connecting-and-pairing-with-windows.md).

# Shimmer3 GSR+: Connecting and Pairing with Windows

**Step 1: Power On the Shimmer3 GSR+**

* Ensure the Shimmer3 is fully charged and operational. You can charge the Shimmer3 GSR+ using the built-in charging dock. Then, power on the device using the button located on the side.

{% hint style="info" %}
The docking unit used for charging can also be used to update the firmware if needed by following the manufacturer’s instructions. Only update the firmware if absolutely needed.
{% endhint %}

#### Step 2: Enable Bluetooth on Your PC

* Ensure Bluetooth is enabled on your Windows 10 or Windows 11 PC. You can check the Bluetooth Status by navigating to **Settings** > **Bluetooth & Devices.**

**Step 3: Adjust Bluetooth Discovery Settings (Windows 11 only)**

Windows 11 defaults to showing low-power Bluetooth devices only. You must turn on the advanced discovery option to allow Windows 11 to discover and connect to the Shimmer3 GSR+, which uses the standard Bluetooth protocol.

* Navigate to **Settings** > **Bluetooth & Devices** > **Devices,** or click [here to open Windows Settings](ms-settings:bluetooth).
* Scroll down, and change the "*Bluetooth devices discovery*" option from ***Default*** to ***Advanced***.

<figure><img src="/files/qEtOhkMCAG5CuGrd3mWt" alt=""><figcaption></figcaption></figure>

#### **Step 4: Pair the Shimmer3 GSR+ to Windows**

Bluetooth devices must be paired to your computer to be fully operational. This procedure is often done one time per device. To pair the Shimmer device to Windows:

* Navigate to **Settings** > **Bluetooth & Devices** and click on **Add Device.**
* Select **Bluetooth.**
* Wait for the Shimmer3 GSR+ to appear in the list of available devices, then select it.
* When prompted, enter the pairing code. This code is printed on the back of the Shimmer3 GSR+ Unit. Note: This code is unique and fixed for each device.

Once pairing is complete, the Shimmer3 GSR+ should appear under Paired Devices in your Bluetooth settings. Cinematronic Biosignal Platform can now establish a connection with the Shimmer. To learn how to connect the software to the Shimmer, follow the guide from the section [***Setting up the testing environment***](/your-first-project/setting-up-the-testing-environment.md).