Alfatron WUK4A


Alfatron ALF-WUK4A

The Alfatron ALF-WUK4A is a 4K HDMI switcher with four HDMI inputs and an HDMI output, Audio De-Embedding, EDID, RS232, and IR Control. Select any of the inputs via the front panel button or IR Remote, the corresponding indicator on the front panel will illuminate to show real-time I/O connection status. Compliance with HDMI 2.0 and HDCP 2.2, 4K@60 4:4:4. The HDMI Switcher 4×1 can transmit uncompressed 4K (max) signal.

The ALF-WUK4A boasts 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. Moreover, the ALF-WUK4A Switcher supports convenient online firmware update via the USB port.


Product Features

  • 4 HDMI inputs
  • 1 HDMI Output
  • Supports Hot-Plug
  • Compliant with HDMI 2.0 and capable of transmitting 4K@60Hz 4:4:4, HDR
  • High bandwidth: 18Gbps
  • HDCP 2.2 compliant, supports auto-detecting for input HDCP compliance status
  • Controllable via RS232 and IR
  • Supports CEC
  • Supports audio return channel (ARC)
  • Supports EDID management, including 5 embedded EDID data, 10 user-definable EDID data (max), and EDID data automatically captured and copied
  • Intuitive indicators for power, switch mode, I/O connection status, and audio output signal


  Video Input 
Input  4 x HDMI
Input Connector  Female type-A HDMI 
HDMI Input Resolution  Up to 4Kx2K@60Hz 4:4:4
HDMI Standard  2.0 
HDCP Version  2.2 
Video Output 
Output  1 x HDMI
Output Connector  Female type-A HDMI 
HDMI Output Resolution  Up to 4Kx2K@60Hz 4:4:4
HDMI Standard  2.0 
HDCP Version  2.2 
Output  1 x AUDIO OUT 
Output Connector  1 x 3.5mm mini stereo audio jack 
Audio Format  PCM 2CH 
Frequency Response  20Hz to 20KHz, ±1dB 
 Max Output Level  2.0Vrms ± 0.5dB. 2V = 16dB headroom above -10dBV (316 mV) nominal consumer line level signal. 
Control  1 x IR IN; 1 x RS232
 Control Connector  2 x 3.5mm mini jack
Bandwidth  18Gbps 
Operation Temperature  -10~ +55 
Storage Temperature  -25~ +70 
Relative Humility  10% – 90% 
System Power Supply  Input:100V ~ 240V AC; Output: 12V DC 2A 
System Power Consumption  14W (Max) 
Dimension (W*H*D)  194mm x 15mm x 81mm 
Net Weight  324g 



Technical Sheet

User Manual


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1. Q – What is the ALF-WUK4A?

    A – The unit is a 4 x 1 HDMI switcher.

2. Q – What is the maximum resolution the device can handle?

    A – It supports full 4K x 2K at 60fps 4:4:4

3. Q –  How is the device controllable?

      A – Via RS232 as well as IR.

4. Q – What audio formats are supported by the device?

    A – PCM is supported.

5. Q – Can the EDID be set?

     A – Yes, there is a DIP switch that can set the predefined EDID.