1. Introduction
This manual provides essential instructions for the safe and effective use of your onerbl 6V AC/DC Adapter. This adapter is designed as a replacement power supply for various Microlife blood pressure monitors. Please read this manual thoroughly before use and retain it for future reference.

Image 1.1: The onerbl 6V AC/DC Adapter, displaying its input (100-240VAC 0.3A 50/60Hz) and output (6VDC 600mA) specifications.
2. Safety Information
To ensure safe operation and prevent damage, observe the following precautions:
- Use the adapter only with devices that require a 6V DC input and match the connector type.
- Do not expose the adapter to water, moisture, or extreme temperatures.
- Avoid dropping or subjecting the adapter to strong impacts.
- Do not attempt to open or modify the adapter. Refer all servicing to qualified personnel.
- Unplug the adapter from the power outlet when not in use for extended periods.
- Ensure the power outlet is easily accessible for quick disconnection.

Image 2.1: The adapter features multiple protection mechanisms including short-circuit protection, over-voltage protection, and over-current protection to safeguard your devices.
3. Product Features
- Universal Input: AC 100-240V 50/60Hz, suitable for worldwide use.
- Stable Output: Provides a consistent 6V DC power supply.
- Safety Protections: Equipped with over-voltage, over-heat, short-circuit, and over-current protection.
- Durable Design: Constructed with quality materials including copper wire and a PVC jacket for longevity.
- Compact and Portable: Designed for travel and easy portability.

Image 3.1: Illustration of the adapter's durable design, highlighting the copper wire and PVC jacket for enhanced quality and longevity.
4. Specifications
| Specification | Detail |
|---|---|
| Brand | onerbl |
| Input Voltage | AC 100-240V, 50/60Hz |
| Output Voltage | DC 6V |
| Compatible Devices | Microlife BP3GX1, BP3GY1-2N, BP3BM1-3, AD-120, AD-1024 |
| Power Source | Corded Electric |
| Main Power Connector Type | 2 Pin (US Standard) |
| Cable Length | Approximately 76 inches (6.3 feet) |
| Dimensions (Adapter Body) | Approximately 2.6 x 1.6 x 1.2 inches |

Image 4.1: Visual representation of the adapter's dimensions (2.6 x 1.6 x 1.2 inches) and cable length (76 inches).
5. Setup
- Verify Compatibility: Ensure your device requires a 6V DC input and has a compatible power port. Refer to your device's original manual for power requirements.
- Connect to Device: Insert the DC output plug of the onerbl adapter into the power input port of your Microlife blood pressure monitor.
- Connect to Power Outlet: Plug the AC input prongs of the adapter into a standard AC 100-240V wall outlet.
- Power On Device: Once connected, your device should receive power. Follow your device's instructions to power it on.

Image 5.1: The adapter correctly plugged into a power strip and connected to a compatible electronic device, demonstrating a typical setup.
6. Operating Instructions
The onerbl 6V AC/DC Adapter operates automatically once connected to a power source and a compatible device. It provides continuous power to your device, allowing it to function without battery power or to charge its internal battery if applicable.
- Ensure the adapter is securely plugged into both the wall outlet and your device.
- Monitor your device for proper operation after connecting the adapter.
- If your device has a charging indicator, observe it to confirm charging status.
7. Maintenance
- Cleaning: Disconnect the adapter from all power sources before cleaning. Use a soft, dry cloth to wipe the exterior. Do not use liquid cleaners or solvents.
- Storage: Store the adapter in a cool, dry place away from direct sunlight and extreme temperatures when not in use. Avoid tightly winding the cable to prevent damage.
- Inspection: Periodically inspect the adapter and cable for any signs of damage, such as frayed wires, cracks, or loose connections. Discontinue use if damage is found.
8. Troubleshooting
| Problem | Possible Cause | Solution |
|---|---|---|
| Device not powering on/charging | Adapter not fully plugged in; Power outlet not active; Device compatibility issue; Damaged adapter/cable. | Ensure all connections are secure. Test the power outlet with another device. Verify device power requirements. Inspect adapter and cable for damage. |
| Adapter feels hot | Normal operation (slight warmth); Overload; Poor ventilation. | A slight warmth is normal. If excessively hot, disconnect immediately. Ensure adapter is not covered and has adequate airflow. Verify device power draw is within adapter limits. |
| Intermittent power | Loose connection; Damaged cable. | Check all connections for tightness. Inspect the cable for any breaks or fraying. |
9. Warranty and Support
For warranty information or technical support, please refer to the contact details provided by your retailer or the onerbl official website. Keep your purchase receipt as proof of purchase.