The ALF-WUK3A is a Full 4Kx2K@60Hz 4:4:4 HDMI Auto Switcher with 3x HDMI inputs and 1x HDMI Output.

It is controllable by selecting any of the inputs on the front panel or via IR Remote. It is compliant with HDMI2.0 and HDCP 2.2. The HDMI Switcher can transmit an uncompressed 4K (at max) signal.

Comprehensive audio capacities including PCM, Dolby Digital, DTS, and DTS-HD. It also provides an ARC audio output socket to transfer ARC audio to ARC speakers and amplifiers.


Supports Video resolutions up to 4Kx2K@60Hz 4:4:4 and 1080P

Supports HDR 10 and Dolby Vision

High bandwidth: 18Gbps

Compliant with HDMI 2.0, capable to transmit 4K signal

HDCP2.2 compliant, support auto-detecting for input HDCP compliant status

Support EDID management, including 5 embedded EDID data, 10(max) user-definable EDID data, and EDID data automatically captured and copied

Supports CEC pass-through

3 HDMI inputs

Support Hot-Plug

Intuitive indicators for power, switch mode, I/O connection status, and audio output signal

Convenient Online firmware update


Video Input 
Input  (3) HDMI 
Input Connector  (4) Female type-A HDMI 
HDMI Input Resolution  Up to 4Kx2K@60Hz 4:4:4 
Video Output 
Output  (1) HDMI 
Output Connector  (1) Female type-A HDMI 
HDMI Output Resolution  Up to 4Kx2K@60Hz 4:4:4 
HDMI Standard  2.0 
HDCP Version  2.2 
HDR  Supported 
Dolby Vision  Supported 
CEC Pass-through  Supported 
HDCP Pass-through  Supported 
EDID Pass-through  Supported 
Hot-plug  Supported 

HDMI Audio Format 

Supports LPCM 7.1 audio, Dolby Atmos®, Dolby® TrueHD, Dolby Digital® Plus, DTS:X™, and DTS-HD® Master Audio™ pass- through. 

HDMI Cable Length 

From source to display device: 1080p@60Hz ≤ 20m, 4K@60Hz(4:2:0) ≤ 10m, 4K@60Hz(4:4:4) ≤ 


Bandwidth  18Gbps 
Operation Temperature  -5~ +55 
Storage Temperature  -25~ +70 
Relative Humidity  10%-90% 
Power Supply  Powered by HDMI input source. 
Power Consumption  0.1W (Max) 
Dimension (W*H*D)  105mm x 55mm x 18mm 
Net Weight  150g 




User Manual