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Description
Knightsbridge SFR9919AT Screwless 13A 1G Switched Socket + 2xUSB (A+C) FAST - AnthraciteKnightsbridge Screwless 13A 1G Switched Socket + 2xUSB (A+C) FAST Anthracite The Knightsbridge Screwless FASTCHARGE Socket is designed for modern living and working spaces. With both USB A and USB C fast charging ports, it delivers up to 50% charge in just 30 minutes (with compatible devices). Featuring a sleek anthracite screwless finish, its perfect for offices, home offices, cafs, restaurants, coffee shops, and hospitality areas. Key Features 13A
Knightsbridge Screwless 13A 1G Switched Socket + 2xUSB (A+C) FAST – Anthracite
The Knightsbridge Screwless FASTCHARGE Socket is designed for modern living and working spaces. With both USB-A and USB-C fast charging ports, it delivers up to 50% charge in just 30 minutes (with compatible devices). Featuring a sleek anthracite screwless finish, it’s perfect for offices, home offices, cafés, restaurants, coffee shops, and hospitality areas.
Key Features
- 13A 1G Switched Socket with anthracite finish
- FASTCHARGE USB-C port – QC2.0/QC3.0 & USB-PD compatible
- FASTCHARGE USB-A port – QC2.0/QC3.0 compatible
- Delivers up to 0–50% charge in under 30 minutes with supported devices
- 80% faster than a standard 5V 2A charger
- Compatible with Android devices supporting QC2.0/QC3.0 & USB-PD (USB-C only)
- Compatible with Apple devices supporting USB-PD (iPhone 8 and above – requires certified Lightning to USB-C cable)
- Back box requirement: 35mm (includes 10mm spacer for retrofitting into 25mm back boxes)
- ErP Ready – ultra-low 0.1W standby mode
- Built from high-quality components for durability
Charging Specifications
FASTCHARGE achieved by switching voltage (5V–12V)
USB-C Port
- 5V DC 3A (15W) with standard devices
- 9V DC 2A (18W) with QC/USB-PD compatible devices
- 12V DC 1.5A (18W) with QC/USB-PD compatible devices
USB-A Port
- 5V DC 2A (10W) with standard devices
- 9V DC 2A (18W) with QC compatible devices
- 12V DC 1.5A (18W) with QC compatible devices
NB: Only one port can activate FASTCHARGE at any one time – the alternative port will revert to 5V DC 1A.
Important Information
- We recommend using certified USB cables for safety and compatibility.
- Fast charge activation is controlled by the device – most devices only enable FASTCHARGE between 0–70% battery before reverting to standard charging to protect the battery.
Resources
📘 Download the Knightsbridge SFR9919AT Data Sheet
Upgrade your power points with the Knightsbridge Screwless FASTCHARGE Socket – combining everyday convenience with modern fast charging technology.
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4.7 ★★★★★
Based on 30 reviews
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Product Reviews
★★★★★ 4
8.5 de 10
Format: Kindle
Lenguaje solo para profesionales y no para principiantes. Lo demás es perfecto con 4 estrellas ya que hasta lloré 3 veces ...
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 22, 2026
★★★★★ 5
Interesting
Format: Paperback
Product with very good quality, its description matches the website.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 11, 2026
★★★★★ 5
A wonderful primer for those discovering the amazing world of generative AI
Format: Paperback, Format: Paperback
Somewhere in the past year, ChatGPT has gone from "cool, interesting, amusing" to a massively valuable work assistant capable of writing Python scripts, analysing data, and doing lots, lots, more. The key to this? The rapid evolution of OpenAI's GPT models and making my first forays into prompt engineering.
If I thought I was getting good, though, this book took me reminded me that I'm just scratching the surface. Halfway through the first chapter I was already furiously scribbling notes in the margins for what I could do better with my prompt writing and by the end of the text I felt like I had gotten a very good grounding - not just in GPTs specifically but in the bigger picture of how these hugely powerful tools were trained and came to maturity.
I imagine that few will argue with my assertion that there is lots of hyperbole and "noise" in the AI space right now which, as ever, makes it hard to pick out the signal from the noise. Which is precisely why I sought out an O'Reilly title and I'm very glad that I did.
Thorough, excellent, and I hope that this edition will be the first of many. As this rapidly maturing field scales and matures I think that prompt engineering will be an essential discipline to master. Pick up this text to get a good foothold on things.
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Reviewed in the United States on August 3, 2024
★★★★★ 4
Understanding AI prompts as a science
Format: Audiobook
Prompt engineering is the art and science of finding the right words to generate the right responses from artificial intelligence (AI). It's becoming a skill in-demand in today's workplaces. It's also becoming an essential skill for life. To understand prompt engineering, you must understand how AI tools understand their inputs. This book explains that to you in many forms.
It covers prompting as it intersects all the major AI disciplines, like general prompts (as in a ChatBot), fine-tuning, and retrieval-augmented generation (RAG). It also introduces how prompting intersects a couple of image-generation tools.
As a scientist, I appreciate the theoretical approach to these practical matters. Too many people are hacks at AI these days, and any technical understanding can rapidly advance an individual's effectiveness. Prompt engineering is often made fun of as a "soft" topic, but as this book demonstrates, it intersects all the major AI areas. Presumably less garbage in means less garbage out. This book shows how you can make that take place.
As typical for O'Reilly materials, this book appeals to people who desire an intermediate-to-advanced understanding of how AI works. It's not for the casual user. Anyone technical involved in professional knowledge generation using AI can benefit from understanding the dynamics "under the hood." It's a good, though perhaps not ground-breaking, textbook for those of us unable to take a class in the subject. Prompt engineering may be a soft topic to many, but books like this ground the field in the science that can make or break a digital or software product.
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Reviewed in the United States on December 13, 2025
★★★★★ 5
Great book
Format: Paperback
Great book! It is helpful as I work towards my Masters of Science in Applied Artificial Intelligence
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Reviewed in the United States on December 20, 2025
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