1. Introduction
Thank you for choosing the SHNITPWR Universal AC to DC Adapter. This versatile power supply is designed to provide adjustable DC voltage from 3V to 24V with a maximum current of 2A and a total power output of 48W. It is equipped with an LCD display for precise voltage monitoring and comes with 14 frequently used tips and a polarity converter, making it compatible with a wide range of small household electronic devices. This manual provides essential information for safe and effective operation.
Image 1.1: The SHNITPWR Universal AC to DC Adapter shown with its included array of interchangeable DC tips.
2. Key Features
- Adjustable Output: Provides DC 3V to 24V adjustable voltage with a maximum of 2A and 48W power output. The LCD display shows the real-time output voltage.
- Wide Compatibility: Includes 14 frequently used DC tips (e.g., 6.5x4.4mm, 5.5x2.1mm, Micro-USB, Type-C) and a polarity converter cable, ensuring compatibility with numerous electronic devices.
- Enhanced Design: Features an improved adjustment knob for smoother voltage regulation and an "off" gear to power down without unplugging.
- Comprehensive Safety: Built-in protection systems against over-voltage, over-current, over-temperature, short circuit, and electromagnetic waves.
- Durable Construction: Made with a 1382°F fire-retardant exterior for enhanced safety.
Image 2.1: Illustration of the adapter's wide range of applications, including LED strips, wireless routers, and smart speakers.
3. Package Contents
- 1 x SHNITPWR Universal AC to DC Adapter (48W)
- 1 x Original 5.5x2.5mm DC Tip (pre-attached)
- 14 x Additional DC Tips (various sizes including 6.5x4.4mm+Pin, 5.5x2.1mm, 5.5x3.0mm+Pin, 5.0x2.5mm, 6.3x3.0mm, 5.5x1.7mm, 4.8x1.7mm, 4.0x1.7mm, 3.5x1.35mm, 3.0x1.1mm, 2.5x0.7mm, Micro-USB, Type-C, and DC terminal connector)
- 1 x Polarity Converter Cable
Image 3.1: A detailed view of the 14 interchangeable DC tips and the polarity converter cable provided with the adapter.
4. Setup and Initial Use
- Identify Device Requirements: Before connecting, determine the exact voltage (V) and current (A) requirements of your electronic device. Refer to your device's original power adapter or user manual.
- Select the Correct DC Tip: Choose the DC tip from the provided set that physically fits your device's power input port.
- Check Polarity: Most devices use center-positive polarity. If your device requires center-negative polarity, use the included polarity converter cable. The adapter's default output is center-positive.
- Adjust Voltage:
- Ensure the adapter is NOT plugged into a wall outlet.
- Rotate the voltage adjustment knob on the adapter to the desired voltage setting. The LCD display will show the selected voltage.
- IMPORTANT: Always set the voltage to match your device's requirements BEFORE plugging the adapter into your device or the wall outlet. Incorrect voltage can damage your device.
- Connect to Device: Insert the selected DC tip into your device's power input.
- Power On: Plug the AC power cord of the adapter into a standard wall outlet (AC 100-240V, 50/60Hz). The LCD display will illuminate, showing the current output voltage.
Image 4.1: Visual representation of the adapter's adjustable voltage range from 3V to 24V.
5. Operation Guidelines
- This product is an AC to DC adapter, NOT a charger. It cannot be used to charge electronic devices with built-in batteries, such as laptops.
- For optimal performance and longevity, it is recommended to use the adapter at less than 80% of its full load capacity (i.e., for devices requiring less than 1.6A for 24V, or proportionally less for lower voltages).
- The "off" gear on the adjustment knob allows you to turn off the power output without physically unplugging the adapter from the wall.
- Ensure proper ventilation around the adapter during operation to prevent overheating.
Image 5.1: An illustration emphasizing the recommendation to use the adapter at less than 80% of its full load for optimal performance.
6. Safety Precautions
- For indoor use only. Do not expose the adapter to water, moisture, or high humidity.
- Do not disassemble or modify the adapter. Unauthorized modifications can lead to electric shock, fire, or damage to the product.
- Keep out of reach of children.
- Avoid dropping or subjecting the adapter to strong impacts.
- If the adapter emits smoke, unusual odors, or makes strange noises, immediately unplug it from the wall outlet and discontinue use.
- Ensure the voltage setting matches your device's requirements precisely. Using an incorrect voltage can permanently damage your device.
Image 6.1: Visual representation of the adapter's built-in safety features, including short circuit, overcurrent, and over-temperature protection.
7. Maintenance
- Clean the adapter with a soft, dry cloth. Do not use liquid cleaners or aerosols.
- Store the adapter in a cool, dry place when not in use.
- Regularly inspect the power cord and adapter housing for any signs of damage. If damage is found, discontinue use and contact support.
8. Troubleshooting
| Problem | Possible Cause | Solution |
|---|---|---|
| No power output / LCD not lit | Adapter not plugged in; Wall outlet not working; Adapter damaged. | Ensure adapter is securely plugged into a live outlet. Test outlet with another device. If still no power, contact support. |
| Device not powering on | Incorrect voltage setting; Incorrect DC tip; Incorrect polarity; Device requires more current than adapter provides. | Verify voltage setting matches device. Ensure correct tip is used and polarity is correct. Check device's current requirements (Max 2A). |
| Adapter gets hot during use | Normal operation under load; Overload; Poor ventilation. | Some warmth is normal. Ensure load is within 80% capacity. Provide adequate ventilation. If excessively hot, discontinue use and contact support. |
| Voltage fluctuates on display | Loose connection; Knob not stable; Device drawing inconsistent power. | Ensure all connections are secure. Avoid touching the knob during operation. If persistent, contact support. |
9. Specifications
| Attribute | Detail |
|---|---|
| Model Number | SNT-0324-48 |
| Input Voltage | AC 100-240V, 50/60Hz |
| Output Voltage | DC 3V ~ 24V (Adjustable) |
| Max Output Current | 2 Amps |
| Max Output Power | 48 Watts |
| Cable Length | 6 ft (approx. 1.8 meters) |
| Item Weight | 0.31 Kilograms (approx. 10.9 ounces) |
| Dimensions (Adapter Unit) | Approx. 11.7cm x 5cm x 3.2cm (4.6in x 1.9in x 1.2in) |
| Certifications | CE, FCC, RoHS |
Image 9.1: Detailed dimensions of the adapter unit and cable lengths for reference.
10. Warranty and Support
The SHNITPWR Universal AC to DC Adapter comes with a 24-month warranty from the date of purchase, covering manufacturing defects. We are committed to providing premium quality and safe power adapters.
If you encounter any issues or have questions regarding your product, please do not hesitate to contact our customer support team. We always stand behind our products and are ready to assist you.
Contact Information:
- Please refer to your purchase platform or product packaging for the most direct contact methods.
- For general inquiries, visit the official SHNITPWR store on Amazon: SHNITPWR Amazon Store
