1. Introduction
This manual provides essential information for the safe and effective use of your TESSAN UK to US Plug Adapter, Model TS-821-US-C. This adapter is designed to allow devices with Type G plugs (common in the UK, Ireland, Singapore, Hong Kong, etc.) to connect to Type B American wall outlets. It also features integrated USB charging ports for convenience.
Important: This product is a plug converter, not a voltage converter. Ensure your electronic devices support a dual-range input voltage of 100V-250V before use. Failure to do so may damage your devices.
2. Safety Information
- Voltage Compatibility: Verify that your device's input voltage range is compatible with the local power supply (e.g., 100-125V in the USA). This adapter does not convert voltage.
- Indoor Use Only: This adapter is intended for indoor use in dry locations. Do not expose to moisture or extreme temperatures.
- Overload Protection: Do not exceed the maximum load of 1250W (125V, 10A) for the AC outlet. Overloading can cause overheating and potential damage.
- Children and Pets: Keep the adapter out of reach of children and pets.
- Damage Inspection: Do not use the adapter if it appears damaged. Contact customer support for assistance.
- Disassembly: Do not attempt to disassemble or modify the adapter. This will void the warranty and may pose a safety risk.
3. Product Overview
The TESSAN UK to US Plug Adapter (TS-821-US-C) is a compact and versatile travel accessory. It features a Type B US plug for wall outlets, a Type G UK socket for your devices, and multiple USB ports for charging.
Components:
- Type B US Plug: For insertion into American wall outlets.
- Type G UK Socket: For connecting devices with Type G plugs.
- USB-A Ports (x2): For charging USB-A compatible devices.
- USB-C Port (x1): For charging USB-C compatible devices.
Key Features:
- Converts Type G plugs to Type B US plugs.
- Maximum AC power output: 1250W (125V, 10A).
- Two USB-A ports and one USB-C port for charging multiple devices simultaneously.
- Compact and lightweight design for easy portability.

The image displays the TESSAN UK to US Plug Adapter, highlighting its Type G socket for UK plugs and the integrated USB-A and USB-C charging ports. The adapter is white with a grey faceplate.
4. Setup
Setting up your TESSAN UK to US Plug Adapter is straightforward:
- Verify Device Compatibility: Before plugging in any device, ensure it is rated for 100V-250V input. This adapter does not convert voltage.
- Insert into Wall Outlet: Plug the Type B US plug of the adapter firmly into a standard American wall outlet.
- Connect Your Device: Insert your Type G UK plug into the Type G socket on the adapter.
- Connect USB Devices: For charging, connect your USB-A or USB-C cables into the corresponding ports on the adapter and then to your devices.

This image illustrates the critical compatibility requirement, showing a checkmark for 100-250V devices and a cross for 110/125V only devices, reinforcing that the adapter does not convert voltage.
5. Operating Instructions
Once the adapter is correctly plugged into a US wall outlet and your devices are connected, power will be supplied automatically.
- AC Outlet Usage: The Type G socket provides up to 1250W (125V, 10A) for your UK devices.
- USB Charging: The two USB-A ports and one USB-C port deliver up to 2.4A (5V) for charging smartphones, tablets, smartwatches, and other USB-powered electronics.
- Simultaneous Charging: You can charge multiple devices (one via AC, up to three via USB) concurrently, provided the total power consumption does not exceed the adapter's maximum rating.

This image shows the TESSAN adapter plugged into a US wall outlet, with a UK plug inserted into its AC socket. A USB-C cable is connected to a tablet, and a USB-A cable is connected to earphones, illustrating the multi-device charging capability.

The image visually explains the adapter's function: connecting a Type G UK plug to a Type B American outlet, while also offering one UK outlet, one USB-A port, and one USB-C port for charging.
Official Product Video:
This video provides a general overview of the TESSAN Travel Adapter, demonstrating its features and ease of use for travelers.
Official Product Video:
This video specifically showcases the TESSAN UK to US plug adapter, illustrating its functionality and how it connects UK devices to US power outlets.
Official Product Video:
This video offers another detailed look at the TESSAN UK to US Plug Adapter, demonstrating its design and practical application for international travel.
6. Maintenance
To ensure the longevity and safe operation of your TESSAN plug adapter, follow these maintenance guidelines:
- Cleaning: Disconnect the adapter from the power outlet and all devices before cleaning. Use a dry, soft cloth to wipe the surface. Do not use liquid cleaners or abrasive materials.
- Storage: Store the adapter in a cool, dry place away from direct sunlight and moisture when not in use.
- Inspection: Periodically inspect the adapter for any signs of damage, such as frayed cables, bent prongs, or cracks in the casing. Discontinue use if damage is found.
7. Troubleshooting
If you encounter issues with your TESSAN UK to US Plug Adapter, refer to the following troubleshooting steps:
| Problem | Possible Cause | Solution |
|---|---|---|
| Device not powering on/charging |
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| Adapter feels hot |
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| USB ports not charging |
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8. Specifications
| Feature | Detail |
|---|---|
| Model Number | TS-821-US-C |
| Input Plug Type | Type B (US) |
| Output Socket Type | Type G (UK) |
| AC Output Rating | Max 125V, 10A, 1250W |
| USB-A Output | 5V / 2.4A (Total for USB ports) |
| USB-C Output | 5V / 2.4A (Total for USB ports) |
| Product Dimensions | 2.56 x 2.09 x 2.76 inches |
| Item Weight | 3.52 ounces |
| Color | White-Grey |
9. Warranty and Support
TESSAN products are designed for reliability and performance. For warranty information, product registration, or technical support, please visit the official TESSAN website or contact their customer service directly. Details can typically be found on the product packaging or the TESSAN brand store on Amazon.
TESSAN Brand Store: Visit TESSAN Store on Amazon





