> For the complete documentation index, see [llms.txt](https://docs.g-iot.io/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.g-iot.io/low-cost-tracker-full-device-guide-book/low-cost-tracker-greater-than-giots-functions/lct-configuration/lct-bluetooth-beacon.md).

# LCT - Bluetooth Beacon

It uses Bluetooth Low Energy (BLE) technology to transmit signals to nearby devices, such as smartphones or IoT sensors. These beacons emit unique identifiers at regular intervals.

<figure><img src="/files/3ezXTKXRhgrv35oxroGD" alt=""><figcaption><p>LCT Bluetooth Beacon Configuration</p></figcaption></figure>

1. **Broadcast Interval** (in seconds): This defines the time interval (in seconds) between each signal broadcast by the Bluetooth beacon. A shorter interval allows for more frequent updates but can consume more power, while a longer interval conserves battery life.
2. **Add Desired Params to Broadcast Message**: Customize the message broadcast by the beacon by adding specific parameters. These could include:

* Serial Number: The unique identifier for the beacon, used for tracking and distinguishing it from other devices.
* Device Name: The name assigned to the beacon, making it identifiable to users or systems.

3. **Advertising Message**: A custom message or data sent by the beacon, which could contain information about the beacon or the environment.
4. **Simulation of Advertising Message**: A test mode where the beacon sends a simulated message. The maximum length of the advertising message is 29 characters, ensuring it adheres to Bluetooth’s standard data limit.

## Steps to Set Up BLE Bluetooth Beacon for Low-Cost Tracker (LCT):

1. **Navigate to the Device Page:**
   * Go to the **Device** section and select the LCT device.
2. **Open Configuration:**
   * Click on **Configuration** in the device menu.
3. **Locate BLE Settings:**
   * Scroll down to find the **BLE Bluetooth Beacon** section.
4. **Activate BLE:**
   * Toggle the switch to **activate** the BLE feature.
5. **Configure Settings:**
   * Adjust the beacon settings, such as broadcasting interval and message parameters.
6. **Save Changes:**
   * Click **Save** to finalize the configuration.


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