1. Introduction
This instruction manual provides essential information for the safe and effective use of your onerbl AC/DC Adapter. This adapter is designed as a high-quality replacement power supply for compatible devices, specifically U.S. Jaclean Model HK-B124-A12. It features universal AC input compatibility and built-in protection mechanisms.
2. Product Features
- Input: AC 100-240V 50/60Hz Auto (Worldwide AC Input)
- Output: Designed to match the specific power requirements of U.S. Jaclean Model HK-B124-A12.
- Safety Protections: Over Voltage Protection, Over Heat Protection, Short-Circuit Protection, Over-Current Protection.
- Design: Durable construction with quality components like copper wire.
- Cable Length: Approximately 6.6 feet (76 inches).

This image illustrates the multiple protection features integrated into the adapter's smart chip, including safeguards against short-circuits, over-voltage, and over-current conditions.

This image highlights the quality control and durable design of the adapter, featuring a cross-section view of the copper wire for enhanced conductivity and longevity.
3. Setup and Installation
- Verify Compatibility: Ensure your device requires an AC/DC adapter with specifications matching the onerbl adapter, specifically U.S. Jaclean Model HK-B124-A12.
- Connect to Device: Insert the barrel connector end of the adapter cable firmly into the power input port of your U.S. Jaclean device.
- Connect to Power Outlet: Plug the AC prongs of the adapter into a standard wall power outlet (100-240V AC). Ensure the outlet is easily accessible.
- Power On Device: Once connected, you may power on your device as usual.

This image shows the AC/DC adapter correctly plugged into a wall outlet, ready for use with a compatible device.
4. Operating Instructions
The onerbl AC/DC Adapter operates automatically once connected to a power source and a compatible device. No manual adjustments are required. The adapter will provide the necessary power to your device for charging or operation.
Important: This adapter is for indoor use only. Do not expose to water, moisture, or extreme temperatures.
5. Maintenance and Care
- Cleaning: Disconnect the adapter from the power outlet and the device before cleaning. Use a dry, soft cloth to wipe the surface. Do not use liquid cleaners or solvents.
- Storage: When not in use, store the adapter in a cool, dry place away from direct sunlight and moisture. Avoid tightly coiling the cable to prevent damage.
- Inspection: Periodically inspect the adapter and cable for any signs of damage, such as cuts, fraying, or bent prongs. If damage is found, discontinue use immediately.
6. Troubleshooting
- No Power to Device:
- Ensure the adapter is securely plugged into both the wall outlet and the device.
- Test the wall outlet with another device to confirm it is functional.
- Check for any visible damage to the adapter or cable.
- Adapter Overheating:
- Ensure the adapter is in a well-ventilated area and not covered.
- Verify that the device connected is compatible and not drawing excessive power.
- If overheating persists, discontinue use and contact support.
7. Specifications
| Model | HK-B124-A12 (Compatible) |
| Brand | onerbl |
| Input Voltage | AC 100-240V, 50/60Hz |
| Power Source | Corded Electric |
| Connector Type | Barrel Connector |
| Product Dimensions | 6 x 4 x 2 inches (Adapter body: approx. 3.1 x 2.1 x 1.2 inches) |
| Item Weight | 8 ounces |
| Main Power Connector Type | 2 Pin (US Standard) |
| Special Feature | Travel (Universal Voltage) |

This image displays the physical dimensions of the AC/DC adapter, indicating its length, width, and thickness.

This image shows the back of the adapter, detailing its model information, input voltage specifications, and a clear 'INDOOR USE ONLY' warning. The cable length is also indicated as 76 inches.
8. Safety Information
- Always ensure the adapter is used with compatible devices to prevent damage.
- This product is designed for indoor use only. Do not use it outdoors or in wet environments.
- Keep the adapter away from water, heat sources, and flammable materials.
- Do not attempt to disassemble, modify, or repair the adapter. Refer to qualified personnel for service.
- Unplug the adapter from the wall outlet when not in use for extended periods.
- Keep out of reach of children.
9. Warranty and Support
For warranty information and customer support, please refer to the documentation provided at the time of purchase or contact the seller directly. The manufacturer, Shenzhen Waweis Technology Co., Ltd, and brand, onerbl, stand behind the quality of this product.