1. Introduction
This manual provides instructions for the safe and efficient use of your Kircuit 5V AC/DC Adapter. This adapter is designed to power or charge compatible devices such as the Lydsto Multivac 1 and 2, models HD-SCXCCQ02 and YM-SCXCCQ01 handheld vacuum cleaners and air inflators. Please read this manual thoroughly before use to ensure proper operation and to prevent damage to the adapter or your device.
2. Safety Information
Adhering to these safety guidelines is crucial for preventing electric shock, fire, or damage to the product and connected devices.
- Use only with compatible devices as specified in this manual.
- Do not expose the adapter to water, moisture, or extreme temperatures.
- Do not attempt to disassemble, modify, or repair the adapter. Refer all servicing to qualified personnel.
- Keep out of reach of children and pets.
- Disconnect the adapter from the power outlet when not in use or during electrical storms.
- Ensure proper ventilation around the adapter during operation to prevent overheating. Do not cover the adapter.
- Avoid using the adapter if the cable or connector is damaged.
3. Product Overview
The Kircuit AC/DC Adapter is a reliable power supply designed to convert standard household AC power into the stable 5V DC power required by your compatible electronic devices. It features a durable construction and incorporates built-in protection mechanisms for safe charging.
3.1 Components
- Adapter Unit: The main body of the charger, housing the power conversion circuitry.
- AC Prongs: For connecting the adapter to a standard 100V-240V AC electrical wall outlet.
- DC Output Cable: The cable that transmits power from the adapter unit to your device.
- DC Connector (Barrel Plug): The specific tip that plugs into the power input port of your compatible device.

Image 1: Front view of the Kircuit AC/DC adapter showing the input specifications and the DC output cable with barrel plug connector.

Image 2: Two Kircuit AC/DC adapters, illustrating their compact design and standard US two-prong plug.

Image 3: Kircuit AC/DC adapter with its coiled output cable, highlighting the 6.5 ft cord length for convenient reach.
4. Setup and Connection
Follow these steps to correctly connect and begin using your Kircuit AC/DC Adapter:
- Verify Compatibility: Before connecting, ensure your device (e.g., Lydsto Multivac HD-SCXCCQ02 or YM-SCXCCQ01) requires a 5V DC input and has a compatible barrel plug power port. Refer to your device's manual for power requirements.
- Connect to Device: Insert the DC connector (barrel plug) of the adapter's output cable firmly into the power input port of your device. Ensure a snug fit.
- Connect to Power Outlet: Plug the AC prongs of the adapter into a standard, functional 100V-240V AC electrical wall outlet.
- Power On Device: Once both connections are secure, your device should receive power or begin charging its internal battery. Observe your device's charging indicator, if available.

Image 4: The Kircuit AC/DC adapter plugged into a power strip, demonstrating a typical setup in a home or office environment.
5. Operation
The Kircuit AC/DC Adapter operates automatically once connected to a power source and a compatible device. It provides a stable 5V DC output, enabling your device to function or charge its internal battery efficiently. The adapter is designed with built-in protection features, including dynamic IC, charger IC, and a power fuse, to ensure rapid charging while safeguarding against overcharge and short circuits.
6. Maintenance and Care
Proper maintenance ensures the longevity and optimal performance of your adapter:
- Keep the adapter clean and free from dust. Use a dry, soft cloth for cleaning. Do not use liquid cleaners.
- Avoid bending, twisting, or crimping the power cord excessively, as this can damage internal wires.
- Store the adapter in a cool, dry place when not in use, away from direct sunlight or heat sources.
- Regularly inspect the cable and connector for any signs of wear, fraying, or damage. If damage is observed, discontinue use immediately.
7. Troubleshooting
If you encounter issues with your Kircuit AC/DC Adapter, refer to the following common troubleshooting steps:
7.1 Device Not Receiving Power/Charging
- Check Connections: Ensure both the DC connector is firmly inserted into your device and the AC prongs are securely plugged into a live wall outlet.
- Verify Outlet: Test the wall outlet with another known working device to confirm it is functional and receiving power.
- Inspect Cable: Carefully examine the adapter's cable and connector for any visible damage, such as cuts, kinks, or bent pins. If damaged, discontinue use and replace the adapter.
- Device Compatibility: Double-check that your device's power requirements (voltage and connector type) precisely match the adapter's specifications. Incompatible adapters can prevent charging or damage your device.
7.2 Adapter Overheating
- Ensure Ventilation: Make sure the adapter is not covered or placed in an enclosed space that restricts airflow. Adequate ventilation is essential during operation.
- Disconnect: If the adapter feels excessively hot to the touch, disconnect it immediately from both the wall outlet and your device. Allow it to cool down completely. If overheating persists upon reconnection, discontinue use.
8. Specifications
The following table outlines the technical specifications of your Kircuit AC/DC Adapter:
| Feature | Specification |
|---|---|
| Input Voltage | 100-240V AC |
| Input Frequency | 50/60Hz |
| Input Current | 0.3A |
| Output Voltage | 5V DC |
| Connector Type | Barrel Plug |
| Compatible Devices | Lydsto Multivac HD-SCXCCQ02, YM-SCXCCQ01 |
| Color | Black |
| Special Features | Built-in Dynamic IC, Charger IC & Power fuse for rapid charging and overcharge protection. |
9. Warranty and Support
Kircuit adapters are tested and designed for reliability and performance. For any product-related issues, technical support, or warranty inquiries, please refer to the return and replacement policy provided by your retailer or contact the manufacturer directly through their official channels. This product typically comes with a standard return/replacement policy as offered by the seller at the point of purchase.





