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Air Purifier Replacement Filter for KNKA APH4000 Air Purifier, 2 Pack

Product description

air purifier Replacement Filterair purifier Replacement Filter

air purifier Replacement Filterair purifier Replacement Filter

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1 Dual 3-Layer Filters

2 Pre-Filter

3 HEPA Filter

4 Activated Carbon Filter

5 Filter indicator

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Perfect Compatibility with APH4000 Air Purifier: Genuine KNKA replacement filters are precisely designed for the APH4000 air purifier, ensuring a secure fit and reliable performance. Third-party filters may not meet the same quality standards, leading to poor sealing, reduced efficiency, or potential device issues. For best results, always use original KNKA filters to maintain consistent air purification performance.
Advanced Filtration Technology: Traps fine particles down to 0.3 microns, such as dust, pollen, and pet dander, helping maintain a fresh and comfortable indoor environment. The activated carbon layer helps reduce common household odors from cooking, pets, and smoke.
Two-Pack Genuine Filters: This set includes two original KNKA True HEPA filters designed for reliable performance and long-lasting use. Each filter has an estimated service life of up to 3,000 hours, and it is recommended to replace the filters every 6 to 8 months for optimal performance.
Easy, Tool-Free Installation: No tools are required—simply replace the filters in a few easy steps. The replacement interval may vary depending on usage and environment. Tip: Before replacing, turn off the power and remove the used filters. After installing new ones, turn on the purifier and press and hold the Filter button for 5 seconds until you hear three beeps to reset the indicator light.
Practical Gift Choice: KNKA APH4000 replacement filters make a thoughtful and practical gift for family and friends—an easy way to support a fresher and more comfortable home atmosphere.

Air Purifier Replacement Filter for KNKA APH4000 Air Purifier, 2 Pack Read More »

Effective TypeScript: 83 Specific Ways to Improve Your TypeScript

TypeScript is a typed superset of JavaScript with the potential to solve many of the headaches for which JavaScript is famous. But TypeScript has a learning curve of its own, and understanding how to use it effectively takes time and practice. Using the format popularized by Effective C++ and Effective Java (both Addison-Wesley), this practical book features 83 items that give specific advice on what to do and what not to do, and how to think about the language.

Author Dan Vanderkam shows you how to apply each item’s advice through concrete examples. This book will help you advance from a beginning or intermediate user familiar with TypeScript basics to an expert who knows how to use the language well.

Updated for TypeScript 5, this second edition includes two new chapters on type-level programming and TypeScript recipes.

Learn the nuts and bolts of TypeScript’s type system Use type inference to get full safety with a minimum of type annotations Design types to make your code safer and more understandable Model complex APIs using generic types and type-level programming Understand how dependencies and type declaration files work in TypeScript Successfully migrate your JavaScript code base to TypeScript

From the brand

oreillyoreilly

Explore more Typescript

or explore JavaScript

More from O’Reilly

Sharing the knowledge of experts

O’Reilly’s mission is to change the world by sharing the knowledge of innovators. For over 40 years, we’ve inspired companies and individuals to do new things (and do them better) by providing the skills and understanding that are necessary for success.

Our customers are hungry to build the innovations that propel the world forward. And we help them do just that.

Publisher ‏ : ‎ O’Reilly Media
Publication date ‏ : ‎ June 4, 2024
Edition ‏ : ‎ 2nd
Language ‏ : ‎ English
Print length ‏ : ‎ 401 pages
ISBN-10 ‏ : ‎ 1098155068
ISBN-13 ‏ : ‎ 978-1098155063
Item Weight ‏ : ‎ 2.31 pounds
Dimensions ‏ : ‎ 7.25 x 0.75 x 9.5 inches
Best Sellers Rank: #152,341 in Books (See Top 100 in Books) #12 in JavaScript Programming (Books) #48 in Microsoft Programming (Books) #228 in Programming Languages (Books)
Customer Reviews: 4.7 4.7 out of 5 stars (36) var dpAcrHasRegisteredArcLinkClickAction; P.when(‘A’, ‘ready’).execute(function(A) { if (dpAcrHasRegisteredArcLinkClickAction !== true) { dpAcrHasRegisteredArcLinkClickAction = true; A.declarative( ‘acrLink-click-metrics’, ‘click’, { “allowLinkDefault”: true }, function (event) { if (window.ue) { ue.count(“acrLinkClickCount”, (ue.count(“acrLinkClickCount”) || 0) + 1); } } ); } }); P.when(‘A’, ‘cf’).execute(function(A) { A.declarative(‘acrStarsLink-click-metrics’, ‘click’, { “allowLinkDefault” : true }, function(event){ if(window.ue) { ue.count(“acrStarsLinkWithPopoverClickCount”, (ue.count(“acrStarsLinkWithPopoverClickCount”) || 0) + 1); } }); });

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HP 22″ FHD All-in-One Desktop Computer • 8GB DDR5 RAM • 512GB External and 128GB UFS Storage | The New Version for Everyday Efficency • Latest 13th Gen Intel Quad-Core • Office 365 for The Web

Processor: 13th Gen Intel N100 Processor (4 cores, up to 3.4GHz turbo speed, 6MB cache, 4 threads) Memory: Up to 32GB DDR5 SO-DIMM RAM Storage: Up to 640GB Total Storage (128GB UFS Internal + 512GB External Flash Drive) Graphics: Integrated Intel UHD Graphics Optical Drive: None Form Factor: All-in-One Display: 21.5″ Full HD (1920×1080) IPS Display, Anti-glare, 16:9 aspect ratio, 60Hz refresh rate, low blue light, flicker-free Audio: High-Definition stereo speakers with enhanced clarity Camera: HD webcam with privacy shutter and built-in dual microphone for clear video calls Keyboard & Mouse: Traditional Wired USB Keyboard & Mouse Ports & Connectivity: 1x USB Type-C (5Gbps, data transfer only) 2x USB Type-A (Hi-Speed) 1x USB Type-A (5Gbps) 1x 3.5mm headphone/microphone combo jack 1x RJ-45 Ethernet port 1x HDMI-out WiFi 6 & Bluetooth 5.3 for high-speed wireless connectivity Power Supply: 65-Watt AC adapter Dimensions (H x W x D): Approx. 15.8 x 19.3 x 6.5 inches Weight: Around 10.5 lbs
【Processor】 Latest 13th Gen Intel N100 Processor (4 cores, up to 3.4GHz, 6MB cache, 4 threads) with integrated Intel UHD Graphics, delivering efficient performance for everyday computing.
【High-Speed Memory & Storage】Equipped with 16 GB DDR5 RAM, 512GB External and 128GB UFS , this system minimizes delays and loading times-ensuring lightning-fast data access, quick boot-ups, and seamless multitasking.
【Ports】 1x USB Type-C (5Gbps, data transfer only), 2x USB Type-A (Hi-Speed), 1x USB Type-A (5Gbps), 1x headphone/microphone combo (3.5mm), 1x RJ-45 Ethernet, 1x HDMI-out, and built-in WiFi 6 & Bluetooth 5.3 for seamless connectivity.
【Display and Built-in Features】 21.5″ Full HD (1920 x 1080) display, offering sharp visuals with an anti-glare coating for comfortable viewing. Dual stereo speakers provide clear and immersive audio, while a built-in HD webcam with a privacy shutter ensures secure video conferencing and online meetings.
【Professional Software Bundle】Comes with Windows 11 and Microsoft Office 365 web offering enhanced productivity tools and advanced security features-perfect for business users and professionals.

HP 22″ FHD All-in-One Desktop Computer • 8GB DDR5 RAM • 512GB External and 128GB UFS Storage | The New Version for Everyday Efficency • Latest 13th Gen Intel Quad-Core • Office 365 for The Web Read More »

Kids Handheld Portable Video Game Player with 200 Games – 16 Bit 2.5 Inch Screen Mini Retro Electronic Machine for Boys Girls

Product description

11

RS8M-粉黄RS8M-粉黄

New Update 2.5inch Handheld Game Player TFT color ,Built in 200 early childhood games 16 Bit retro game console

22

RS-8M Travel Electronic Video Game Machine for Kids Adult

The Main Menu contains 20 games type

Game Types : sports, arcade, shooting, racing, strategy, preschool education and more.

Mini games: contains 6 categories and under each of those categories there is more games.Under the main subcategory of “education” it contains 41 games.

The Handheld Game come with a pair of earphone,you can concentrate without disturbing the people around you

Small Portable gamer can be put in the pockets, children can carry them and play games anytime, anywhere

Early education games: promote children’s brain development and exercise intelligence. Protect children’s eyes and prevent eye fatigue

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Product Detail

Language:English Size:2.5 Inch screen,TFT Built in 200 games Battery:700mAhSupport:USB cable,2.88 mm earphone jackGame player: not support TV connectItem Size:5.07*2.55*0.78 inch

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Battery Mode

Built-in 700 mAh Rechargeable Battery Use 4-6 hours when it’s fully charged. Needn’t buy batteries frequently.Smart Power Saving: It will be off when doesn’t work after 10 mins. It is very energy-efficient and durable product.

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Package List

1*game console 1*manual 1*USB cable1*lithium battery 1*2.88 port earphonePackage box:5.7*4.13*1.57in

The Gaming system retro machine provide sport,puzzle,education .

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There is variety of exciting and challenging games for children – perfect for Christmas & birthday

Note

In order to have a better game experience, please charging before using!

If you hit the screen flashing or blurry, this means you need to charge!

Please remove the protective film of the game console screen before use Make sure that the console is switched “off”before installing batteries.

Remove the batteries cover at the bottom of the plastic case. Switch on the on/off button to start the game .

Warming & precaution

Not suitable for children under 3 years old due to length of cord.Strangulation hazard.

Do not repair or remove any parts from the unit as this will cause a hazard.

Remove all the plastic laces before giving the toy to your child.

Under the environment with electrostatic discharge ,the product may malfunction and require user to reset the product.

8M8M

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☛RS-8M with 220 Games: The handheld game console has 220 non-violence kids games ,the games can be played never repetition, bring you back to the fun of childhood.
☛Portable&Travel Mini Arcade: This lightweight hand held game player is very easy to carry ,you can enjoy game fun of childhood when on a train, airplane or bus. Make your kids busy and playing it anytime ,anywhere.
☛Pre-Education Games: Built in sport,puzzle,action,venture,table,relax education games and many mini games.The purpose of game development is to exercise children’s intelligence and cognitive ability.
☛Rechargeable battery and USB: Come with lithium battery can be charged.The video game player can play up to 4 hours each time it is fully charged.Support USB charged and earphone port.
☛Christmas Surprise for Boys Girls: It’s good choice for children as a Christmas, birthday, school. This game console can definitely surprise you and your child.
☛Matching Travel Game Case:The hard protective case can effectively protect your game player from being squeezed, bumped and damaged. It can also organize charging cable headphones and other accessories. You can enter our store to place an order with your game player at the same time if you need it.

Kids Handheld Portable Video Game Player with 200 Games – 16 Bit 2.5 Inch Screen Mini Retro Electronic Machine for Boys Girls Read More »

KNKA Air Purifiers for Home Large Room Bedroom Up to 2325 Ft², Washable Filters, Air Quality Monitor, Turbo Mode, Auto & Sleep Modes, HEPA Air Cleaner for Smoke, Dust, Pet Hair, Pollen (APH3000)

From the brand

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Founded in 2005, KNKA specializes in environmental appliances including dehumidifiers, air purifiers, and humidifiers. With a professional design team and strict quality control, we balance performance with minimalist aesthetics. At KNKA, we believe clean air is the foundation of a happy life, which is why we focus on advanced technology and elegant design to create fresher, more comfortable living spaces.

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Welcome to KNKA store ~

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Effortlessly Purifies Spaces up to 2325 Sq. Ft: KNKA True HEPA air purifier is designed for bedrooms, living rooms, offices, and large open areas. Its powerful fan and circulation system quickly remove airborne pollutants, ensuring fresh air for your family in any environment.
Advanced Triple Filtration: The washable pre-filter extends the H13 HEPA filter’s lifespan, reducing costs while capturing larger particles like hair and dust. The HEPA filtration system with an activated carbon layer removes 99.9% of particles as small as 0.3 microns, including dust, pollen, pet dander, and smoke, making it ideal for households with pets or allergy sufferers.
Real-Time Air Quality Monitoring: A built-in sensor continuously tracks air quality, with real-time updates displayed via an LED indicator. In Auto Mode, the room air purifier adjusts fan speed automatically for optimal performance and energy efficiency.
Ultra-Quiet Sleep Mode: Operating at just 24dB—quieter than a whisper—it ensures restful sleep and uninterrupted air purification, a flexible light button to adjust the purifier’s lights as needed, making it perfect for bedrooms or nurseries.
Turbo Mode and Essential Features: Speeds up purification by over one-third, effectively eliminating odors and pollutants.Additional features include a child lock, an aroma sponge for added ambiance, and a user-friendly design. Air purifiers for home pets combine style, efficiency, and convenience.
Customizable Modes: Choose from three adjustable fan speeds or let Auto Mode adjust automatically based on air quality. The timer function (1-12 hours) ensures convenience when sleeping or away.
Hassle-Free Maintenance: A filter replacement indicator notifies you when it’s time to change filters. Replace every 3–6 months for optimal performance. Use official KNKA filters (search for B0DDKMTRXK or B0D9PVNF1K on Amazon).

KNKA Air Purifiers for Home Large Room Bedroom Up to 2325 Ft², Washable Filters, Air Quality Monitor, Turbo Mode, Auto & Sleep Modes, HEPA Air Cleaner for Smoke, Dust, Pet Hair, Pollen (APH3000) Read More »

Learning TypeScript: Enhance Your Web Development Skills Using Type-Safe JavaScript

TypeScript has conquered the world of JavaScript: it’s one of the world’s fastest growing and most popular languages across developer surveys, widely used in consumer and business companies alike, and frequently credited for helping massive web applications scale. But what is TypeScript? How does it work, why does it work, and how can we use it?

Learning TypeScript takes beginner to intermediate JavaScript programmers from knowing nothing about “types” or a “type system” to full mastery of the fundamentals of TypeScript. It’s more than a means to find bugs and typos–it’s a useful system for declaring the way our JavaScript should work and helping us stick to it. You’ll learn how TypeScript:

interacts with JavaScript analyzes and understands code augments your existing development pattern helps you document your code works with IDEs to provide refactoring tools assists local development in refactoring code helps you develop more quickly with fewer bugs

From the brand

oreillyoreilly

Explore more Typescript

or explore JavaScript

More from O’Reilly

Sharing the knowledge of experts

O’Reilly’s mission is to change the world by sharing the knowledge of innovators. For over 40 years, we’ve inspired companies and individuals to do new things (and do them better) by providing the skills and understanding that are necessary for success.

Our customers are hungry to build the innovations that propel the world forward. And we help them do just that.

Publisher ‏ : ‎ O’Reilly Media
Publication date ‏ : ‎ July 12, 2022
Edition ‏ : ‎ 1st
Language ‏ : ‎ English
Print length ‏ : ‎ 317 pages
ISBN-10 ‏ : ‎ 1098110331
ISBN-13 ‏ : ‎ 978-1098110338
Item Weight ‏ : ‎ 2.31 pounds
Dimensions ‏ : ‎ 7 x 0.5 x 9.25 inches
Best Sellers Rank: #622,726 in Books (See Top 100 in Books) #103 in JavaScript Programming (Books) #427 in Introductory & Beginning Programming #575 in Software Development (Books)
Customer Reviews: 4.5 4.5 out of 5 stars (118) var dpAcrHasRegisteredArcLinkClickAction; P.when(‘A’, ‘ready’).execute(function(A) { if (dpAcrHasRegisteredArcLinkClickAction !== true) { dpAcrHasRegisteredArcLinkClickAction = true; A.declarative( ‘acrLink-click-metrics’, ‘click’, { “allowLinkDefault”: true }, function (event) { if (window.ue) { ue.count(“acrLinkClickCount”, (ue.count(“acrLinkClickCount”) || 0) + 1); } } ); } }); P.when(‘A’, ‘cf’).execute(function(A) { A.declarative(‘acrStarsLink-click-metrics’, ‘click’, { “allowLinkDefault” : true }, function(event){ if(window.ue) { ue.count(“acrStarsLinkWithPopoverClickCount”, (ue.count(“acrStarsLinkWithPopoverClickCount”) || 0) + 1); } }); });

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HP 15.6″ FHD Touchscreen Laptop Computer, 16GB RAM 1.2TB Storage (256GB SSD+1TB Cloud Storage), 8-Core AMD Ryzen 7, Windows 11, Copilot AI-Ready, WiFi-6, PLUSERA Earphones & 8-in-1 Hub Included, Black

To meet the advertised specifications, the original factory seal is opened by our professional engineers for upgrade purposes. This product includes a 1-year warranty provided by Smartisan Tech. This laptop is equipped with the powerful Intel N200 processor, along with generous RAM and Storage. Enjoy effortless multitasking on its 15.6″ HD LED display with an integrated camera. This laptop is designed with additional features to cater to your specific needs. Numeric keypad. Camera privacy shutter. The extended battery life ensures you can stay focused for longer periods. Stay connected with ample ports for all your devices. Built to support your workflow, whether at home or on the go. Experience the enhanced security and performance of Windows 11, with fast boot times and responsive operations.
【Processor】Intel N200 (4 cores, 4 threads, Max Boost Clock Up to 3.7Ghz, 4MB Cache) with Intel UHD Graphics. Your always-ready experience starts as soon as you open your device.
【Display】This laptop has a 15.6-inch LED display with 1366 x 768 (HD) resolution and vivid images to maximize your entertainment.
【Exceptional Storage Space】Equipped with DDR4 RAM and UFS, runs smoothly, responds quickly, handles multi-application and multimedia workflows efficiently and quickly.
【Tech Specs】1 x USB-C, 2 x USB-A, 1 x HDMI, 1 x Headphone/Microphone Combo Jack, WiFi. Bluetooth. Windows 11, 1-Year Microsoft Office 365, Numeric Keypad, Camera Privacy Shutter.
【Switch Out of S Mode】To install software from outside the Microsoft Store, you’ll need to switch out of S mode. Go to Settings > Update & Security > Activation, then locate the “Switch to Windows Home” or “Switch to Windows Pro” section. Click “Go to the Store” and follow the on-screen instructions to complete the switch.

HP 15.6″ FHD Touchscreen Laptop Computer, 16GB RAM 1.2TB Storage (256GB SSD+1TB Cloud Storage), 8-Core AMD Ryzen 7, Windows 11, Copilot AI-Ready, WiFi-6, PLUSERA Earphones & 8-in-1 Hub Included, Black Read More »

The Last of Us Part I – PlayStation 5

Relive the beloved game that started it all – rebuilt for the PlayStation®5 console. Experience the emotional storytelling and unforgettable characters in The Last of Us™, winner of over 200 Game of the Year awards. In a ravaged civilization, where infected and hardened survivors run rampant, Joel, a weary protagonist, is hired to smuggle 14-year-old Ellie out of a military quarantine zone. However, what starts as a small job soon transforms into a brutal cross-country journey. Includes the complete The Last of Us single-player story and celebrated prequel chapter, Left Behind, which explores the events that changed the lives of Ellie and her best friend Riley forever.
Enhanced visuals: Completely rebuilt from the ground up using Naughty Dog’s latest PS5 engine technology to improve every visual detail, The Last of Us experience has been faithfully enhanced with more realistic lighting and atmosphere, more intricate environments and creative reimaginings of familiar spaces.
Fast loading: Initial loading times are near instant, and seamless after the first instance thanks to the PS5 console’s SSD – so you can pick up where you left off in the story and load specific encounters and chapters more quickly.
Haptic feedback: DualSense wireless controller haptic feedback support for every weapon elevates combat encounters, and environments are brought to life through DualSense wireless controller haptic sensations of subtle falling rain, the crunch of stepping on snow and more.
Adaptive triggers: All The Last of Us iconic weapons, including Joel’s revolver and Ellie’s bow, now deliver dynamic DualSense wireless controller trigger resistance and kickback on firing for deeper combat immersion.
3D Audio: Designed to make use of the PS5 console’s Tempest 3D AudioTech, Naughty Dog’s newly upgraded audio engine delivers richer soundscapes, bigger explosive moments and more visceral gameplay through compatible stereo headphones (analogue or USB) or TV speakers.

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