Introduction
This manual provides essential information for the safe and effective use of your Kircuit 12V AC/DC Adapter. This adapter is designed to convert AC power into the DC power required by your compatible Philips DreamStation Auto CPAP device, allowing operation or battery charging from standard electrical outlets. Please read this manual thoroughly before use and retain it for future reference.
Safety Information
Observe the following safety precautions to prevent damage to the adapter, your device, or personal injury:
- Ensure the adapter's voltage and current specifications match your device's requirements.
- Do not expose the adapter to water, moisture, or extreme temperatures.
- Avoid dropping or subjecting the adapter to strong impacts.
- Do not attempt to open or modify the adapter. Refer servicing to qualified personnel.
- Keep the adapter away from heat sources and ensure adequate ventilation during use.
- Disconnect the adapter from the power outlet when not in use for extended periods.
- This adapter includes Over Voltage Protection (OVP), Over Current Protection (OCP), and Short Circuit Protection (SCP) for enhanced safety.
Package Contents
Verify that all items are present in the package:
- 1 x Kircuit 12V AC/DC Power Adapter
- 1 x AC Power Cord (for wall outlet connection)
- 1 x DC Output Cable (integrated with adapter, with barrel connector)
Setup
Follow these steps to connect your Kircuit AC/DC adapter:
- Connect the AC Power Cord: Insert the AC power cord into the adapter's AC input port.
- Plug into Wall Outlet: Insert the other end of the AC power cord into a standard electrical wall outlet (100-240VAC, 50/60Hz).
- Connect to Device: Carefully insert the DC output barrel connector from the adapter into the power input port of your Philips DreamStation Auto CPAP device. Ensure a secure connection.

Image: The Kircuit AC/DC adapter plugged into a wall outlet, ready for device connection.
Operating Instructions
Once the adapter is correctly connected to both the power outlet and your Philips DreamStation Auto CPAP device, the device should power on or begin charging its battery, depending on its current state and design. The adapter is designed for continuous operation within its specified limits.
Maintenance
To ensure the longevity and proper functioning of your 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: When not in use, store the adapter in a cool, dry place, away from direct sunlight and moisture. Avoid tightly coiling the cables to prevent damage.
- Inspection: Periodically inspect the cables and connectors for any signs of wear, fraying, or damage. If damage is observed, discontinue use and replace the adapter.
Troubleshooting
If you encounter issues with your adapter, refer to the following common problems and solutions:
| Problem | Possible Cause | Solution |
|---|---|---|
| Device not powering on/charging | Loose connection, faulty outlet, incompatible device, damaged adapter. | Check all connections. Try a different wall outlet. Verify device compatibility. Inspect adapter for damage. |
| Adapter feels excessively hot | Poor ventilation, overloaded circuit, internal fault. | Ensure adapter is in a well-ventilated area. Disconnect and allow to cool. If problem persists, discontinue use. |
| Visible damage to cable or connector | Physical wear and tear. | Discontinue use immediately and replace the adapter. |
Specifications

Image: Overview of the Kircuit AC/DC adapter and its connected cables.
| Feature | Detail |
|---|---|
| Brand | Kircuit |
| Input Voltage | 100-240VAC, 50/60Hz (Worldwide Compatible) |
| Output Voltage | 12VDC |
| Output Current | 6.67A |
| Power Output | 80W |
| Connector Type | Barrel Connector (One Pin in the Jack) |
| Compatible Devices | Philips DreamStation Auto CPAP DSX500S11, DSX500S11F, DSX500S11C05 |
| Safety Features | OVP (Over Voltage Protection), OCP (Over Current Protection), SCP (Short Circuit Protection) |
| Color | Black |

Image: The Kircuit AC/DC adapter with its physical dimensions indicated.

Image: A close-up view of the AC power cord plug.
Warranty and Support
This Kircuit product is tested and designed for reliable performance. For any issues or support inquiries, please refer to the seller or manufacturer's contact information provided at the point of purchase. Specific warranty details may vary and are typically provided with your purchase documentation.