1. Introduction
This manual provides essential information for the safe and effective use of your onerbl AC Adapter. This product is designed as a high-quality replacement power supply for various muscle massage guns and other compatible electronic devices. Please read this manual thoroughly before use and retain it for future reference.
2. Safety Information
To ensure safe operation and prevent damage, observe the following precautions:
- Indoor Use Only: This adapter is designed for indoor use in dry locations. Do not expose it to water, rain, or excessive humidity.
- Voltage Compatibility: Ensure the wall outlet voltage matches the adapter's input specifications (AC 100-240V).
- Proper Connection: Always connect the adapter to the device before plugging it into the wall outlet. Disconnect from the wall outlet first before unplugging from the device.
- Avoid Overloading: Do not connect the adapter to devices that exceed its specified output power.
- Ventilation: Ensure adequate ventilation around the adapter during use. Do not cover it or place it in an enclosed space.
- Damage Inspection: Regularly inspect the adapter and cable for any signs of damage. Do not use if the cable is frayed, the plug is bent, or the casing is cracked.
- Children and Pets: Keep the adapter out of reach of children and pets.
- Disassembly: Do not attempt to disassemble or modify the adapter. This will void the warranty and may pose a safety risk.

Image: Rear view of the onerbl AC Adapter, clearly displaying the input voltage range (100-240V AC, 50/60Hz) and a prominent 'CAUTION INDOOR USE ONLY' label. This emphasizes the importance of using the adapter in appropriate environments.

Image: A graphic illustrating the 'SMART CHIP' technology within the onerbl AC Adapter, highlighting its multiple protection features including short-circuit protection, over-voltage protection, and over-current protection, designed to safeguard your electricity and connected devices.
3. Product Overview and Dimensions
The onerbl AC Adapter is a compact and durable power supply designed for reliability. Its barrel connector ensures a secure fit with compatible devices.

Image: A detailed view of the onerbl AC Adapter with its dimensions clearly labeled: approximately 3.1 inches in length, 2.1 inches in width, and 1.2 inches in thickness, providing a clear understanding of its physical size.

Image: A visual representation of the 'Wide Range of Applications' for the onerbl AC Adapter, depicting various compatible devices such as massage guns, set-top boxes, routers, cameras, and other small electronics, illustrating its versatility.
4. Setup
Follow these steps to set up your onerbl AC Adapter:
- Identify Device Compatibility: Ensure your device requires an AC adapter with a barrel connector and matches the output specifications of this adapter. This adapter is compatible with devices such as WASAGUN 520B Vibration Massager, Youlisn Intelitopia Muscle Massage Gun, GeToo HQ-1813, Vigorous Innovations VI Pro Percussion, and Ekrin Athletics B37.
- Connect to Device: Insert the barrel connector of the adapter firmly into the power input port of your electronic device.
- Plug into Wall Outlet: Insert the AC plug of the adapter into a standard wall power outlet (AC 100-240V, 50/60Hz).
- Verify Power: Once connected, your device should receive power. Refer to your device's manual for specific power indicators.

Image: The onerbl AC Adapter is shown plugged into a standard wall socket, demonstrating a typical setup scenario. The adapter's compact design allows it to fit discreetly.
5. Operation
The onerbl AC Adapter operates automatically once connected. It converts the alternating current (AC) from your wall outlet to the direct current (DC) required by your device. No user intervention is required during operation.
- The adapter is designed for continuous use within its specified limits.
- Its universal input voltage (100-240V) allows for use in various regions worldwide with appropriate plug adapters (not included).
6. Maintenance
Proper maintenance extends the life of your AC 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: When not in use, store the adapter in a cool, dry place, away from direct sunlight and extreme temperatures. Avoid tightly coiling the cable.
- Cable Care: Do not bend, twist, or pull the cable excessively, especially near the connectors. This can damage the internal wires.

Image: A cross-section diagram illustrating the durable design of the adapter's cable, showing the copper wire conductors protected by a robust PVC jacket, indicating quality construction for longevity.
7. Troubleshooting
If you encounter issues with your onerbl AC Adapter, refer to the following common problems and solutions:
- Device Not Powering On:
- 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.
- Verify that the adapter's output specifications match your device's power requirements.
- Adapter Overheating:
- It is normal for adapters to feel warm during operation, but excessive heat indicates a problem.
- Disconnect the adapter immediately.
- Ensure it is not covered and has adequate ventilation.
- If overheating persists, discontinue use and contact customer support.
- Flickering Power/Intermittent Connection:
- Check for loose connections at both ends of the cable.
- Inspect the cable for any visible damage or kinks.
8. Specifications
| Brand | onerbl |
| Input Voltage | AC 100-240V, 50/60Hz (Worldwide AC Input) |
| Output | Matches original device requirements (e.g., for WASAGUN 520B, Youlisn, GeToo HQ-1813, Vigorous Innovations VI Pro, Ekrin Athletics B37) |
| Connector Type | Barrel Connector |
| Cable Length | Approximately 76 inches (6.3 feet) |
| Safety Features | Over Voltage Protection, Over Heat Protection, Short-circuit Protection, Over-current Protection |
| Compatible Devices | Muscle Massage Guns (e.g., WASAGUN 520B, Youlisn Intelitopia, GeToo HQ-1813, Vigorous Innovations VI Pro, Ekrin Athletics B37) |
| Item Weight | 8 ounces |
| Manufacturer | Shenzhen Waweis Technology Co., Ltd |

Image: A comparison of cable lengths, highlighting the 'Extended Cord Design' with a 6.6 ft (approximately 76 inches) cable, providing ample reach for various setups.
9. Warranty and Support
For warranty information or technical support, please refer to the product packaging or contact the seller directly through your purchase platform. Keep your purchase receipt as proof of purchase.