1. Introduction
This manual provides instructions for the safe and effective use of the Onerbl AC-DC Adapter. This adapter is designed as a replacement power supply for the AGPTEK CZ-208 CZ208 Portable Two Way Electric Air Pump, Quick-Fill Airpump Inflator Deflator with 3 Nozzles. It converts standard AC wall power to the DC power required by your device, enabling operation and charging.
2. Safety Information
- Ensure the adapter is used with compatible devices only. Refer to the specifications section for details.
- Do not expose the adapter to water, moisture, or high humidity.
- Avoid using the adapter in extremely hot or cold environments.
- Do not attempt to open, modify, or repair the adapter. This may void the warranty and pose safety risks.
- Keep the adapter away from children.
- Unplug the adapter from the wall outlet when not in use for extended periods.
- If the adapter or cable appears damaged, discontinue use immediately.
3. Product Overview
The Onerbl AC-DC Adapter is a compact and reliable power supply. It features built-in protection mechanisms to ensure safe operation for your compatible devices.

Image 1: Front and side view of the Onerbl AC-DC adapter. The front displays 'AC Adapter Input: 100-240VAC 0.3A 50/60Hz' and regulatory marks. The side shows the two-prong plug.

Image 2: This diagram illustrates the physical dimensions of the adapter: 2.6 inches in length, 1.6 inches in width, and 1.2 inches in height. It also indicates a cable length of 76 inches.
4. Setup
- Verify Compatibility: Ensure your AGPTEK CZ-208 CZ208 Portable Electric Air Pump requires a 12VDC 2A power input and uses a barrel connector.
- Connect to Device: Insert the barrel connector of the Onerbl AC-DC Adapter firmly into the power input port of your AGPTEK air pump.
- Connect to Power Outlet: Plug the adapter's two-prong plug into a standard 100-240V AC wall outlet.
- Power On: Once connected, your air pump should be ready for operation.

Image 3: The Onerbl AC-DC adapter is shown plugged into a power strip, which is placed on a desk next to a laptop and a plant, demonstrating a typical usage scenario.
5. Operating Instructions
Once the Onerbl AC-DC Adapter is properly connected to both the power outlet and your AGPTEK CZ-208 CZ208 air pump, the air pump will receive power. Operate your air pump according to its own instruction manual. The adapter provides a stable 12VDC 2A power supply for continuous operation or charging.
6. Maintenance
- Cleaning: Disconnect the adapter from all power sources before cleaning. Use a dry, soft 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 extreme temperatures.
- Inspection: Periodically inspect the adapter and its cable for any signs of damage, such as cuts, fraying, or bent prongs. If damage is found, discontinue use.
7. Troubleshooting
- No Power to Device:
- Ensure the adapter is securely plugged into a working wall outlet.
- Verify the barrel connector is fully inserted into the air pump's power port.
- Test the wall outlet with another device to confirm it is functional.
- Check the adapter and cable for visible damage.
- Adapter Overheating:
- Disconnect the adapter and allow it to cool down.
- Ensure the air pump is not drawing more power than the adapter's rated output (12VDC 2A).
- Ensure adequate ventilation around the adapter.
8. Specifications
| Feature | Detail |
|---|---|
| Brand | Onerbl |
| Model Compatibility | AGPTEK CZ-208 CZ208 Portable Two Way Electric Air Pump |
| Input Voltage | 100-240V AC, 0.3A, 50/60Hz |
| Output Voltage/Current | 12V DC, 2A (2000mA) |
| Connector Type | Barrel Connector |
| Special Features | Over Voltage Protection, Over Heat Protection, Short Circuit Protection |
| Color | Black |
| Cable Length | 76 inches (approx. 1.93 meters) |
| Dimensions (Adapter Body) | 2.6 inches (L) x 1.6 inches (W) x 1.2 inches (H) |
9. Warranty Information
This product is covered by a standard manufacturer's warranty. For specific details regarding warranty duration and terms, please refer to the documentation provided at the time of purchase or contact the seller directly.
10. Support
If you encounter any issues or have questions not covered in this manual, please contact the seller or manufacturer for assistance. Provide your product model number (AGPTEK CZ-208 CZ208) and the adapter's brand (Onerbl) when seeking support.