1. Product Overview
The Holyiot nRF54L15 is part of a product series that includes Bluetooth Low Energy (BLE) modules and BLE beacons. These products utilize low-power Bluetooth communication technology, offering low power consumption, stable transmission, and wide coverage.
The Bluetooth Low Energy module is designed for integrating Bluetooth communication functions into various smart devices, enabling core functionalities such as data collection and instruction transmission. The low-power beacons are ideal for applications like indoor positioning, asset tracking, and information push, providing efficient wireless communication support for Internet of Things (IoT) applications.
Manufacturer: Shenzhen Holyiot Technology Co.,LTD.
2. Setup Instructions
2.1 Preparatory Work
- Module Model Confirmation: Confirm that the module model matches your application equipment.
- Required Components: Prepare the necessary power supply, connection cables, and any supporting development tools (if applicable).
2.2 Hardware Connection (for Low-Power Modules)
Before connecting, ensure the device is powered off.
- Power Connection: Connect the VCC and GND pins of the module to the corresponding power interface of your device. Ensure that the positive and negative poles are correctly aligned.
- Communication Pins: Depending on communication requirements, connect communication pins such as TX and RX. Refer to the product pin diagram for specific pin definitions.

2.3 Power Installation (for Low-Power Bluetooth Beacons)
If your beacon has a housing:
- Open the beacon housing.
- Insert the battery that meets the product specifications into the battery compartment, ensuring correct positive and negative pole orientation.

2.4 Installation and Fixation (for Low-Power Bluetooth Beacons)
- Choose an appropriate installation location based on your application scenario (e.g., walls, ceilings, or asset surfaces).
- Secure the beacon using double-sided tape or other suitable fixation methods to ensure a firm installation. Avoid any obstructions that might affect signal transmission.
3. Operating Instructions
3.1 Parameter Configuration
Configure the module's parameters such as Bluetooth name, communication baud rate, broadcast interval, and connection password using the accompanying development tools or AT commands.
3.2 Function Test (for Low-Power Modules)
- After power-on, the module will enter its normal working state.
- Search for the module's Bluetooth name using a serial port command or the accompanying application (APP).
- Establish a connection and perform data transmission tests to confirm normal functionality.
3.3 Work Test (for Low-Power Bluetooth Beacons)
- Once installed, the beacon will automatically begin broadcasting.
- Use a Bluetooth device to search for the beacon signal.
- Verify that the signal strength and broadcasting stability meet your requirements.
Note: This beacon is a semi-finished product. The factory-provided program is solely for testing the beacon module hardware. For specific application scenarios, users must write and flash their own firmware program.
4. Maintenance
To ensure the longevity and optimal performance of your Holyiot nRF54L15 BLE Beacon, please adhere to the following maintenance guidelines:
- Environmental Conditions: Avoid using the product in environments with extreme temperatures, high humidity, excessive dust, or corrosive gases, unless the product specifications explicitly state it has the appropriate protection level (e.g., IP67). Such conditions can degrade performance, shorten service life, and pose safety risks.
- Physical Handling: This product is a precision electronic component. Do not subject it to violent impact, dropping, or unauthorized disassembly. Disassembly can damage the internal circuit structure and cause product failure.
- Disposal: When the product reaches the end of its life cycle, please sort and recycle it in accordance with local electronic waste disposal regulations. Do not dispose of it improperly, as this can pollute the environment.
5. Troubleshooting
If you encounter issues with your Holyiot nRF54L15 BLE Beacon, consider the following:
- Connectivity Issues: If the module does not enter a normal working state after power-on, or if you cannot find its Bluetooth name, recheck all hardware connections (VCC, GND, TX, RX) to ensure they are correct and secure.
- Signal Strength/Stability: If the beacon signal strength or broadcasting stability does not meet requirements during the work test, review the installation location for potential obstructions or sources of electromagnetic interference.
- Functionality: Remember that the beacon is a semi-finished product. If specific application functions are not working as expected, it may require custom firmware development and flashing. The factory program is for hardware testing only.
- Parameter Configuration: Incorrect parameters (Bluetooth name, baud rate, broadcast interval, connection password) can prevent proper operation. Ensure these are configured correctly using the development tools or AT commands.
6. Specifications
| Attribute | Value |
|---|---|
| Brand Name | Holyiot |
| Model Number | Bluetooth 6.0 Beacon |
| Communication Method | Bluetooth-Compatible |
| Bluetooth Version | BLE 6.0 (Bluetooth Low Energy) |
| Chipset | Nordic nRF54L15 |
| Sensors | SHT40 (Temperature/Humidity), LIS2DH12 (Accelerometer), LPS22HB (Barometer) |
| Advertising Format | iBeacon, Eddystone |
| Size | 27.6 x 27.6 mm |
| Antenna | PCB Antenna |
| Operating Temperature | -20℃ to 60℃ |
| High-concerned chemical | None |
| Origin | Mainland China |

7. User Tips
No specific user tips were available from provided reviews or Q&A content.
8. Warning/Safety Information
! Warning
- Voltage Range: This product is only applicable within the specified working voltage range. Using it beyond this range may cause product damage, short circuits, or fire hazards. Refer to the product specification sheet for detailed parameters.
- Power Off During Operations: Installation, disassembly, and wiring operations must be performed when the power is off to prevent electric shock or product failure due to live operation.
- Environmental Restrictions: Do not use this product in extreme temperature, humidity, dusty, or corrosive gas environments, unless the product specification explicitly indicates a corresponding protection level (e.g., IP67). Such environments can affect product performance, shorten service life, and pose safety hazards.
- Handle with Care: This is a precision electronic component. Avoid violent impacts, dropping, or unauthorized disassembly. Disassembly may damage the internal circuit structure and cause the product to fail.
- Keep Out of Reach of Children: Place the product out of reach of children to prevent accidental operation or ingestion of small components, which could lead to safety accidents.
- Proper Disposal: When discarding the product, sort and recycle it according to local electronic waste disposal regulations. Do not discard it randomly to avoid environmental pollution.
9. Compliance Mark
This product complies with relevant regional regulations. The compliance mark is as follows:
CE
CE Mark: Indicates conformity with health, safety, and environmental protection standards for products sold within the European Economic Area (EEA).
10. Warranty and Support
10.1 Technical Support
If you encounter any problems during the use of this product, please contact us for feedback. You can reach technical support at: sales-aliexpress@holyiot.com
10.2 Version Updates
The content of this manual may be updated as product upgrades occur. For the latest version of the manual, please visit the manufacturer's official website for inquiry: www.hyyunjia.com
A user manual in PDF format is also available for download. Please refer to the official website for the latest version.