1. Introduction
This manual provides essential information for the safe and effective use of your OMNIHIL UL Listed Extra Long 10FT L-Shaped C7 Power Cord. This power cord is designed as a high-quality replacement for compatible electronic devices, specifically the Osito Oxygen Concentrator 8L/min-AST-809. Please read this manual thoroughly before use.

Figure 1: OMNIHIL L-Shaped C7 Power Cord, coiled for storage.
2. Product Features
- High Quality Construction: Manufactured with durable materials for reliable performance.
- Extended Length: Features a 10-foot (approximately 3-meter) length for flexible placement.
- L-Shaped C7 Connector: Designed with an L-shaped C7 (IEC C7, figure-8) connector for space-saving and secure connection to devices.
- UL Listed & RoHS Certified: Ensures safety and compliance with industry standards.
- Compatibility: Ideal replacement power cord for the Osito Oxygen Concentrator 8L/min-AST-809 and other devices requiring a C7 power input.

Figure 2: Detail of the L-shaped C7 connector and the Nema Type A wall plug.

Figure 3: The 10-foot length provides flexibility for various setups.
3. Setup and Installation
- Verify Compatibility: Ensure your device requires a C7 (figure-8) power cord and is compatible with the voltage and current ratings of this cord. This cord is specifically designed for the Osito Oxygen Concentrator 8L/min-AST-809.
- Power Off Device: Before connecting the power cord, ensure the electronic device is turned off and unplugged from any existing power source.
- Connect to Device: Insert the L-shaped C7 connector end of the power cord firmly into the corresponding power input port on your device. The L-shape design helps in tight spaces.
- Connect to Power Outlet: Insert the Nema Type A plug end of the power cord into a standard, grounded wall outlet. Ensure the connection is secure.
- Power On Device: Once both ends are securely connected, you may power on your device.
4. Operating Instructions
This power cord is a passive component designed to supply electrical power to compatible devices. Its operation is straightforward:
- Once properly connected to both the device and a power outlet, the cord facilitates the flow of electricity to power your device.
- Ensure the cord is not kinked, pinched, or placed under heavy objects to prevent damage and ensure continuous power supply.
- Always handle the plugs, not the cord itself, when connecting or disconnecting.
5. Maintenance and Care
Proper care will extend the life of your OMNIHIL power cord:
- Cleaning: Disconnect the cord from all power sources before cleaning. Wipe the cord and plugs with a dry, soft cloth. Do not use liquid cleaners or abrasive materials.
- Storage: When not in use, coil the cord loosely to prevent kinks and tangles. Store it in a cool, dry place away from direct sunlight and extreme temperatures.
- Inspection: Periodically inspect the cord for any signs of damage, such as cuts, fraying, or bent pins on the plugs. If damage is observed, discontinue use immediately.
- Avoid Overstretching: Do not pull or stretch the cord excessively, as this can damage the internal wiring.
6. Troubleshooting
If your device is not receiving power, consider the following troubleshooting steps:
| Problem | Possible Cause | Solution |
|---|---|---|
| Device not powering on. | Cord not fully inserted into device or wall outlet. | Ensure both ends of the power cord are securely and fully inserted. |
| Device not powering on. | Wall outlet is not active. | Test the wall outlet with another known working appliance. Check circuit breaker if necessary. |
| Device not powering on. | Power cord is damaged. | Inspect the cord for visible damage (cuts, fraying, bent pins). If damaged, discontinue use and replace the cord. |
| Device not powering on. | Device itself has an issue. | Consult your device's user manual for troubleshooting steps related to its power supply. |
7. Specifications
| Attribute | Detail |
|---|---|
| Brand | OMNIHIL |
| Cable Type | AC Power Cord |
| Connector Type (Device End) | L-Shaped C7 (IEC C7, Figure-8) |
| Connector Type (Wall End) | Nema Type A (2-prong, ungrounded) |
| Length | 10 Feet (approx. 3 meters) |
| Certifications | UL Listed, RoHS Compliant |
| Compatible Devices | Osito Oxygen Concentrator 8L/min-AST-809, and other electronic devices requiring a C7 power input. |
| Product Dimensions | 3 x 2 x 3 inches (packaged); 4.96 ounces |
| Manufacturer | Zhongshan Master Light Source Electronic |
| ASIN | B0CXL2MQ18 |
8. Warranty and Support
Warranty: This OMNIHIL power cord comes with a 5 Year Free Replacement Warranty. This warranty covers defects in materials and workmanship under normal use. For warranty claims, please contact OMNIHIL customer support with your purchase details.
Customer Support: For any questions, technical assistance, or warranty inquiries, please refer to the contact information provided with your purchase or visit the official OMNIHIL website. When contacting support, please have your product model and purchase date available.
Note: This product consists of 3rd party non-OEM parts.





