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The Knightsbridge SFR9224AT is designed for homeowners and electricians seeking a modern, integrated power solution. Its key benefit is the combination of two standard 13A switched sockets with two 2.4A USB-A charging ports in a single, sleek unit, reducing clutter. A potential caveat is the shared USB charging power, meaning devices may charge slower when both ports are in use simultaneously. This screwless, low-profile double socket in anthracite offers a premium steel finish for a clean aesthetic.
| Model Part Number | SFR9224AT |
|---|---|
| Brand | Knightsbridge |
The dual USB-A ports share a total output of 5V DC and 2.4A. This means the maximum combined current for both ports is 2.4A.
The USB ports are designed for standard mobile devices. While some smaller or older laptops might charge slowly via USB-A, it's generally not recommended or sufficient for most modern laptops which typically require higher wattage chargers, often via USB-C.
No, the screwless design refers to the aesthetic appearance. Installation is standard for a double socket, requiring connection to mains wiring and mounting into a suitable back box.
The faceplate has a low profile, measuring less than 5mm thick, giving a sleek and unobtrusive appearance.
The integrated gasket helps prevent moisture transfer, offering some protection. However, always ensure electrical installations comply with local building regulations, which may specify certain IP ratings or types of fittings for wet areas.
The Knightsbridge SFR9224AT is certified to BS 1363-2 and EN 62368-1 standards, and includes overload and short-circuit protection.
Each of the two standard switched sockets is rated at 13A.
Verify mains power is on at the consumer unit. Check all wiring connections are secure. Ensure the switch is in the 'on' position.
Confirm the main power to the socket is active. Ensure the device's USB cable is functional and correctly plugged in. Try a different USB cable or device to rule out compatibility issues. Check if the shared 2.4A limit is being exceeded by multiple high-draw devices.
Turn off power at the consumer unit. Gently tighten the mounting screws securing the unit to the back box.
This is expected if charging two devices simultaneously, as the 2.4A is shared. Disconnect one device to allow the other to charge at its maximum potential rate (up to 2.4A). Use high-quality, certified USB cables.
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