Zyko Atmos 4K 120Hz HDMI Sync Box
Bring games and movies beyond the screen with real-time HDMI 2.1 lighting sync.
Built for smooth 4K 120Hz gaming on PS5, Xbox, Switch and PC, with no camera hanging over your TV.
Built for Next-Gen Gaming
Keep the performance your setup was built for. HDMI 2.1 supports 4K at 120Hz, VRR and ALLM, making it ideal for PS5, Xbox Series X|S, PC and other HDMI devices.
Colour That Moves With the Action
Real-time screen sync lets the LED lights react to what is happening on your TV, spreading matching colours beyond the display for a more immersive gaming and entertainment experience.
No Camera Above Your TV
Colours are read directly from the HDMI signal, so there is no camera hanging over your screen. Just clean, responsive TV backlighting that stays visually connected to the content.
Control More Than Screen Sync
Switch colours, adjust brightness, explore scene modes and activate music-reactive lighting from the app. Alexa and Google Home support also give you simple voice control.
Made for More Screens
Choose from six TV size options covering approximately 27 to 98 inches, with the same high-density lighting specification across every Zyko variant.
Gaming & Video
- HDMI 2.1
- 4K at 120Hz
- VRR support
- ALLM support
- HDR support
- Dolby Vision support
- PS5, Xbox, Switch & PC compatible
Lighting
- 60 LEDs per metre
- Real-time screen colour syncing
- Multi-zone colour control
- Adjustable brightness and colour
- Music-reactive lighting
- Preset scene modes
- Multiple video modes
Smart Control
- Wi-Fi app control
- Amazon Alexa support
- Google Home / Google Assistant support
- Tuya compatible
- Voice control
Sizes
- Six TV size options
- Fits 27–98" TVs
- 60 LEDs/m across every Zyko size
Looking for the finer details? Full technical specifications can be found at the bottom of the page.
Compatible Devices
Works with HDMI-connected devices including:
- PlayStation 5
- Xbox Series X|S
- Nintendo Switch
- Gaming PCs
- Laptops with HDMI output
- Streaming devices
- Other compatible HDMI media sources
Gaming Support
Designed for current-generation gaming with support for:
- HDMI 2.1
- 4K at 120Hz
- VRR
- ALLM
- HDR
- Dolby Vision
Smart Home Compatibility
Control lighting through compatible smart-home platforms including:
- Amazon Alexa
- Google Home / Google Assistant
- Tuya
- Voice control through supported integrations
Important HDMI Sync Note
Real-time screen syncing works with content that passes through the sync box via HDMI.
Built-in TV apps such as Netflix, Disney+ or Prime Video do not pass through the HDMI box, so their on-screen content will not sync unless you use an external HDMI streaming device.
TV Compatibility
Available in six size options for TVs from approximately 27 to 98 inches.
Choose the variant that best matches your TV size for the correct LED strip length and fit.
Shipping Times
Enjoy free worldwide delivery on every order. Most orders arrive within 6–12 business days, with tracking included throughout the delivery journey where available.
Returns
Eligible items can be returned within 30 days of delivery. Simply contact our team before returning your item and we'll provide the correct return instructions.
Faulty or Incorrect Items
If your item arrives damaged, faulty or incorrect, please contact us within 14 days of delivery. We'll review the issue and work with you to find the most appropriate solution.
For full details, please see our Shipping Policy and Refund Policy.
Zyko HDMI 2.1 TV Backlight Sync Kit
Responsive Screen Sync, More Immersive Gaming.
A Smarter TV Backlight Experience
Turn everyday gaming, movie nights and downtime into something that feels bigger, richer and more atmospheric around the whole room.
Gaming Ambient Lighting
More Than Just the Screen
Create a gaming space that feels instantly more atmospheric, whether you’re settling into a campaign or winding down with a film.
Vivid TV Backlighting
Richer Colour, Cleaner Sync
High-density 60 LEDs/m deliver brighter, more saturated colour with smoother transitions between tones, helping the backlight look richer and more vibrant across the whole screen.
Next-Gen 120Hz Sync
120Hz Gaming That Keeps Up
Responsive colour follows fast-moving action around your screen, making races, battles and late-night sessions feel more connected and immersive.
Learn more
Technical Specifications
Everything you need to know about performance, connectivity, lighting, compatibility and what’s included.
HDMI 2.1
4K at 120Hz
VRR supported
ALLM supported
Supported
Supported
HDCP 2.3
Supported
60 LEDs per metre
Real-time colour matching
Adjustable
Sound-reactive lighting
Multiple presets
Corner guides included
Yes
2.4GHz
Supported
Supported
Supported
Still Deciding?
Learn more about setup, features and shipping. Quick answers to help you choose with confidence.
How do I set up the Zyko HDMI 2.1 Sync Box TV Backlight Kit?
Mount the LED strips around the back of your TV, using the included corner guides to route them neatly around each corner. Connect your console, PC or streaming device to HDMI IN, connect HDMI OUT to your TV, plug the LED strips into the sync box and connect power. Once connected, the lighting can react to content passing through the box.
Will the lights sync with built-in Netflix, Disney+ or other smart TV apps?
Not directly. Screen syncing requires the video signal to pass through the sync box via HDMI, so built-in TV apps do not feed content through it.
If you mainly use built-in apps, our [Atmos TV Camera Sync Backlight Kit] may be a better fit because it reads the screen directly and can react to any content shown on your TV.
Which TV size option should I choose?
Measure your TV diagonally from one corner of the screen to the opposite corner and use the size options as a guide rather than a strict limit.
If your TV falls between two listed ranges, choose the closest suitable option. For example, a 31–36" TV can still use the 40–43" variant comfortably.
The goal is simply to choose enough strip length to route around the back of your TV without coming up short.
Do I need Wi-Fi for the HDMI screen sync to work?
The HDMI connection handles screen syncing. Wi-Fi is mainly used for app control, smart-home integrations and additional lighting controls.
Can I return it if I’m not satisfied?
Eligible items can be returned within 30 days of delivery, provided they’re unused and in good condition. Please contact us before sending anything back so we can provide the correct return instructions.
How long does delivery take?
We provide free worldwide tracked delivery, with most orders arriving within 6–12 business days. Every order includes tracking, so you can follow your delivery from dispatch to arrival where available.
What kind of support do you offer?
Our support team can help with setup, troubleshooting and product questions. Contact us at hello@zyko.uk and we’ll respond as soon as possible during our business hours.
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