LT-KS021-8K 8K HDMI Bi‑Direction Switch – Product Overview
The LT-KS021-8K is a high‑performance HDMI bidirectional switcher that supports 1‑input to 2‑outputs (splitter mode) or 2‑inputs to 1‑output (switcher mode). Compliant with HDMI 2.1, it delivers a maximum data rate of 48Gbps and supports resolutions up to 8K@60Hz, while being backward compatible with 4K@240Hz, 4K@120Hz, and standard resolutions.
It features lossless audio formats including Dolby TrueHD, DTS‑HD Master Audio, LPCM 7.1, and Dolby Atmos, as well as advanced HDR technologies HDR10+, Dolby Vision, and Dynamic HDR. Equipped with VRR (Variable Refresh Rate) and ALLM (Auto Low Latency Mode), it eliminates screen tearing and stuttering – ideal for gaming. Housed in an aluminum shell for excellent heat dissipation, it operates from -5℃ to +70℃ and is plug‑and‑play. Widely compatible with PS5, Xbox Series X/S, high‑end gaming PCs, 4K@240Hz monitors, 8K projectors, and more.
Key Features
🔄 Bi‑Directional Switching – 1x2 or 2x1
1 input to 2 outputs: Send one source to two displays simultaneously.
2 inputs to 1 output: Switch between two sources on a single display.
Flexible for different setups without needing multiple devices.
🚀 8K Ultra HD Support
Maximum resolution: 8K@60Hz (7680×4320). Also supports 4K@240Hz, 4K@120Hz, 1080P, etc.
HDMI 2.1 compliant with 48Gbps data rate.
🎵 High‑End Audio Compatibility
Supports lossless audio: Dolby TrueHD, DTS‑HD Master Audio, LPCM 7.1, Dolby Atmos.
🌈 Advanced HDR Technologies
HDR10+, Dolby Vision, Dynamic HDR – richer colors and contrast.
🎮 Gaming Optimized (VRR & ALLM)
VRR (Variable Refresh Rate): Eliminates screen tearing.
ALLM (Auto Low Latency Mode): Automatically switches to low‑latency state for responsive gaming.
📦 Durable Aluminum Shell
Aluminum housing for better heat dissipation and durability.
Compact size (exact dimensions not specified).
🌡️ Wide Operating Temperature
Operating temperature: -5℃ to +70℃ – suitable for various environments.
🔌 Plug‑and‑Play
No drivers required. Connect sources, displays, power, and it works.
🛡️ Reliable Warranty
1‑year free warranty.
Technical Specifications
| Parameter | Specification |
|---|---|
| Model | LT-KS021-8K |
| Function | HDMI bidirectional switcher (1x2 splitter or 2x1 switcher) |
| Max Resolution | 8K@60Hz (7680×4320@60Hz) |
| Compatible Resolutions | 4K@240Hz, 4K@120Hz, 1080P, etc. |
| HDMI Standard | HDMI 2.1 |
| Data Rate | 48Gbps |
| Connector | HDMI‑A (female) |
| Audio Support | Dolby TrueHD, DTS‑HD Master Audio, LPCM 7.1, Dolby Atmos |
| HDR Support | HDR10+, Dolby Vision, Dynamic HDR |
| Gaming Features | VRR, ALLM |
| Switching Control | Manual button / IR remote (check package for remote inclusion) |
| Housing | Aluminum shell |
| Operating Temperature | -5℃ ~ +70℃ |
| Operating Humidity | 5% ~ 90% |
| Warranty | 1 year |
| Unit | PCS |





