1. Product Overview
This manual provides instructions for the onerbl 24V AC/DC Adapter, designed to provide reliable power to compatible devices, including VEVOR Y428bt, Y468bt, Y428, and Y468 Bluetooth Wireless Thermal Shipping Label Printers. It converts standard AC wall power to the required DC voltage for your device.

Image 1.1: The onerbl 24V AC/DC Adapter with its detachable power cord. The adapter features a compact design with an indicator light.
2. Safety Information
Please read and understand all safety instructions before using this product. Failure to follow these instructions may result in electric shock, fire, or other hazards.
- Ensure the adapter's input voltage (AC 100-240V) matches your local power supply.
- Do not expose the adapter to water, moisture, or extreme temperatures.
- Avoid dropping or subjecting the adapter to strong impacts.
- Do not disassemble or attempt to repair the adapter. Refer all servicing to qualified personnel.
- Unplug the adapter from the power outlet when not in use for extended periods.
- Keep out of reach of children.

Image 2.1: The adapter incorporates a smart chip designed to provide multiple layers of protection, including short-circuit protection, over-voltage protection, and over-current protection, enhancing electrical safety.
3. Package Contents
Verify that all items are present in the package:
- 1 x onerbl 24V AC/DC Adapter
- 1 x AC Power Cord (for connecting to wall outlet)

Image 3.1: The detachable AC power cord, which connects the adapter to a standard wall outlet.
4. Setup Instructions
Follow these steps to set up your onerbl 24V AC/DC Adapter:
- Connect the AC Power Cord: Insert the figure-8 connector of the AC power cord firmly into the corresponding port on the AC/DC adapter.
- Connect to Device: Plug the DC output connector of the adapter into the power input port of your VEVOR thermal label printer (or other compatible device). Ensure a secure connection.
- Connect to Power Outlet: Plug the AC power cord into a standard wall power outlet.
- Verify Power: The indicator light on the adapter should illuminate, indicating that power is being supplied. Your device should now receive power.

Image 4.1: The adapter correctly connected to a wall power outlet and ready to power a device.
5. Operating Instructions
Once properly set up, the onerbl 24V AC/DC Adapter operates automatically. It provides a stable 24V DC output to your connected device. There are no user-adjustable settings on the adapter itself.
- Ensure the adapter is placed in a well-ventilated area to prevent overheating.
- If the indicator light does not illuminate, check all connections and the power outlet.
6. Maintenance and Care
Proper maintenance ensures the longevity and safe operation of your adapter:
- Cleaning: Disconnect the adapter from the power outlet and device before cleaning. Use a soft, dry cloth to wipe the surface. Do not use liquid cleaners or solvents.
- Storage: Store the adapter in a cool, dry place away from direct sunlight and moisture when not in use.
- Cable Inspection: Regularly inspect the power cords for any signs of damage, such as cuts, fraying, or bent pins. Replace damaged cords immediately.

Image 6.1: Illustration of the internal construction of the power cable, highlighting the copper wire and PVC jacket for durability and safety.
7. Troubleshooting
If you encounter issues with your adapter, refer to the table below for common problems and solutions:
| Problem | Possible Cause | Solution |
|---|---|---|
| Adapter indicator light is off. | No power from outlet, loose connection, or faulty adapter. | Check wall outlet with another device. Ensure all cables are securely connected. Try a different outlet. If problem persists, contact support. |
| Device not powering on. | Adapter not supplying power, device issue, or incorrect adapter. | Verify adapter indicator light is on. Ensure the adapter is compatible with your device's power requirements. Test the device with another known-good power source if available. |
| Adapter feels excessively hot. | Poor ventilation, overloaded, or internal fault. | Ensure adapter is in a well-ventilated area. Disconnect and allow to cool. If overheating persists, discontinue use and contact support. |
8. Specifications
Detailed technical specifications for the onerbl 24V AC/DC Adapter:
| Feature | Specification |
|---|---|
| Input Voltage | AC 100-240V, 50/60Hz |
| Output Voltage | DC 24V |
| Protection Features | Over Voltage Protection, Over Heat Protection, Short Circuit Protection |
| Compatibility | VEVOR Y428bt, Y468bt, Y428, Y468 Bluetooth Wireless Thermal Shipping Label Printers |
| Manufacturer | Shenzhen Waweis Technology Co., Ltd |

Image 8.1: Detailed dimensions of the adapter unit, including length, width, and connector sizes.
9. Warranty and Support
This onerbl product is covered by a standard warranty against manufacturing defects. For specific warranty terms and conditions, please refer to the product packaging or contact your retailer.
For technical support, troubleshooting assistance, or warranty claims, please contact the seller or manufacturer directly. Keep your purchase receipt as proof of purchase.