1. Introduction
Thank you for choosing the GUY-TECH AN12040VA Replacement Power Supply Adapter. This adapter is designed to provide reliable power for your Zefiro S10 M012 100W Cordless Handheld Vacuum. This manual provides important information regarding the setup, operation, maintenance, and safety of your new power adapter. Please read it thoroughly before use and retain it for future reference.
2. Product Overview
2.1 Key Features
- Input Voltage: AC 100V - 240V, suitable for worldwide use.
- Output Protection: Features over voltage, over current, and short circuit output protection for enhanced safety.
- Efficiency: High power exchange efficiency to maintain stable working temperature.
- Compatibility: Specifically designed as a replacement power supply for the Zefiro S10 M012 100W Cordless Handheld Vacuum.
- Certifications: Meets CCC, CE, and RoHS standards.
2.2 Components
The GUY-TECH AN12040VA power adapter consists of the following main components:
- Adapter Unit: The main body housing the power conversion circuitry.
- AC Plug: An American-style two-prong plug for connecting to wall outlets.
- DC Output Cable: A flexible cable with a thick copper core for efficient power transmission to your device.

Image 1: Detailed view of the GUY-TECH power adapter. This image highlights the American plug design, the internal thick copper core of the cable for efficient power delivery, and the flexibility of the power cord, indicating durability and ease of use.
3. Setup Instructions
- Verify Compatibility: Ensure that your device, the Zefiro S10 M012 100W Cordless Handheld Vacuum, requires a DC12.8V power input. This adapter is specifically designed for this model.
- Connect to Device: Insert the DC output plug of the adapter firmly into the power input port of your Zefiro S10 M012 vacuum.
- Connect to Power Outlet: Plug the AC plug of the adapter into a standard AC 100V-240V wall power outlet.
- Power On: Once connected, your device should begin charging or receive power, depending on its operational state.

Image 2: The GUY-TECH power adapter correctly plugged into a standard wall outlet, demonstrating a typical setup scenario.
4. Operating Instructions
This power adapter is designed for straightforward operation. Once properly connected to both the power outlet and your Zefiro S10 M012 vacuum, it will automatically supply the necessary power for charging or direct operation.
- Charging: When the vacuum's battery is low, connecting the adapter will initiate the charging process. Refer to your vacuum's manual for specific charging indicators.
- Direct Power: If your vacuum supports direct operation while plugged in, the adapter will provide continuous power.
- Disconnection: To disconnect, first unplug the adapter from the wall outlet, then disconnect it from your vacuum.
5. Maintenance
Proper maintenance ensures the longevity and safe operation of your power adapter.
- 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 moisture when not in use. Avoid tightly coiling the cable to prevent damage.
- Inspection: Periodically inspect the cable and adapter for any signs of damage, such as cuts, frayed wires, or bent pins. If damage is found, discontinue use immediately and replace the adapter.
6. Troubleshooting
If you encounter issues with your power adapter, refer to the following common solutions:
| Problem | Possible Cause | Solution |
|---|---|---|
| Device not charging/powering on. | Adapter not properly connected. | Ensure both ends of the adapter are securely plugged in. |
| Wall outlet is not active. | Test the outlet with another device or try a different outlet. | |
| Adapter or cable is damaged. | Inspect for visible damage. If damaged, replace the adapter. | |
| Adapter feels warm during use. | Normal operation. | A slight warmth is normal. If it becomes excessively hot or emits smoke/smell, unplug immediately and discontinue use. |
If the problem persists after trying these solutions, please contact customer support.
7. Specifications
| Attribute | Detail |
|---|---|
| Brand | GUY-TECH |
| Model Number | AN12040VA |
| Input Voltage | AC 100V - 240V |
| Output Voltage | DC12.8V (compatible with Zefiro S10 M012 11.1V 2200mAh battery systems) |
| Power Output | 100W (compatible with Zefiro S10 M012 100W vacuum) |
| Connector Type | Plug |
| Color | Black |
| Material | Composite, Metal, Plastic |
| Special Feature | Travel-friendly design |
| Certifications | CCC, CE, RoHS |
| Dimensions (Adapter Unit) | Approximately 2.92 in (length) x 1.58 in (width) x 1.18 in (height) |

Image 3: Physical dimensions of the GUY-TECH power adapter, illustrating its compact size for portability.

Image 4: The GUY-TECH power adapter being placed into a bag, highlighting its compact and portable design for easy transport.
8. Safety Information
Please observe the following safety precautions to prevent injury or damage to the product:
- Do not expose the adapter to water, rain, or excessive moisture.
- Do not disassemble, modify, or attempt to repair the adapter. This may void the warranty and pose safety risks.
- Avoid using the adapter in extremely hot or cold environments.
- Keep the adapter out of reach of children and pets.
- Ensure the adapter is used with compatible devices only. Using it with incompatible devices may cause damage.
- Unplug the adapter during lightning storms or when unused for long periods.
9. Warranty and Support
For warranty information or technical support, please refer to the documentation provided with your purchase or contact the seller directly. Ensure you have your purchase details and product model number (AN12040VA) ready when contacting support.


