1. Introduction
This manual provides essential information for the safe and effective use of your onerbl 12V 2A AC-DC Adapter. This adapter is designed as a replacement power supply for devices requiring a 12V DC, 2A power input, such as the Slabway LM-FYCST501G Heated Leg Foot Massager Pump. Please read these instructions carefully before use and retain them for future reference.

Image 1.1: Front and side view of the onerbl 12V 2A AC-DC Adapter. The adapter is black with a standard US two-prong plug and a barrel connector cable.
2. Safety Information
- Compatibility: Only use this adapter with devices that specify a 12V DC input and a current draw of 2A or less. Using it with incompatible devices may cause damage or fire.
- Indoor Use Only: This adapter is designed for indoor use in dry locations. Do not expose it to water, moisture, or high humidity.
- Ventilation: Ensure adequate ventilation around the adapter during use. Do not cover it or place it in an enclosed space where heat can build up.
- Cable Care: Do not bend, twist, or pull the power cord excessively. Avoid placing heavy objects on the cord.
- Disconnection: Always unplug the adapter from the wall outlet before cleaning or if it will not be used for an extended period.
- Damage: Do not use the adapter if the casing, cord, or plug is damaged. Contact customer support for a replacement.
- Children: Keep the adapter out of reach of children.
3. Package Contents
Your package should contain the following item:
- 1 x onerbl 12V 2A AC-DC Adapter with Barrel Connector
4. Setup
Follow these steps to set up your AC-DC adapter:
- Verify Compatibility: Confirm that your device requires a 12V DC input and draws no more than 2 Amps (2000mA). Check your device's original adapter or specifications label.
- Connect to Device: Insert the barrel connector end of the adapter cable firmly into the DC input port of your device.
- Connect to Power Outlet: Plug the AC prongs of the adapter into a standard 100-240V AC wall outlet. Ensure the outlet is easily accessible.

Image 4.1: The onerbl AC-DC adapter connected to a device, illustrating a typical setup on a desk.
5. Operating Instructions
Once properly connected, the adapter will supply power to your device. There are no additional operating controls on the adapter itself. The device connected to the adapter will control its own power functions.
- To power on your device, use the device's power button or controls.
- To power off your device, use the device's power button or controls.
- To disconnect power completely, unplug the adapter from the wall outlet.
6. Specifications
| Feature | Specification |
|---|---|
| Input Voltage | 100-240V AC, 50/60Hz, 0.3A |
| Output Voltage | 12V DC |
| Output Current | 2 Amps (2000mA) |
| Output Wattage | 24W |
| Connector Type | Barrel Connector |
| Color | Black |
| Cable Length | 76 inches (approx. 1.93 meters) |
| Dimensions (Adapter Body) | 2.6 in x 1.6 in x 1.2 in (approx. 6.6 cm x 4.1 cm x 3.0 cm) |
| Protections | Over Voltage Protection, Over Heat Protection |

Image 6.1: Dimensions of the onerbl AC-DC Adapter and its cable length.
7. Troubleshooting
- No Power to Device:
- Ensure the adapter is fully plugged into a working wall outlet.
- Verify the barrel connector is securely inserted into your device's power port.
- Check if the device's power switch is in the 'ON' position.
- Confirm that your device's power requirements match the adapter's output (12V DC, 2A).
- Test the wall outlet with another appliance to ensure it is functional.
- Adapter Feels Warm:
- It is normal for the adapter to feel slightly warm during operation.
- If it becomes excessively hot, unplug it immediately. Ensure it is not covered and has adequate ventilation.
8. Maintenance
- Cleaning: Disconnect the adapter from the power outlet and the device before cleaning. Use a soft, dry cloth to wipe the surface. Do not use liquid cleaners or aerosols.
- Storage: When not in use, store the adapter in a cool, dry place, away from direct sunlight and extreme temperatures. Avoid tightly winding the cable.
9. Warranty and Support
For warranty information or technical support, please refer to the retailer or manufacturer's website where you purchased this product. Keep your purchase receipt as proof of purchase.