Alfatron SCK41TS




The Alfatron ALF-SCK41TS is a 4K seamless scaler switcher with 4 video inputs ( 2x HDMI, 1x HDMI/ DP, 1x HDMI/USB C).

The ALF-SCK41TS scales & switches any video signal to HDMI output and HDBaseT output (Supports PoC and connects to an HDBaseT Receiver, up to a maximum transmission distance of 70 meters for full HD and 30m for 4k.

In addition, ALF-SCK41TS can be controlled via front panel buttons, IR remote, RS232 commands, CEC, and web-based GUI.

Product Features

  • HDMI 1.4, HDCP 2.2, 10.2G, up to 4K@30Hz 4:4:4
  • HDBaseT Technology, 40m 4K , 70m@1080p.
  • Multi-View with 16 Presets and 4 User Customization layouts.
  • Reposition and resize the windows.
  • Seamless switching between windows.
  • One-way POC from the switcher to the receiver.
  • Includes Receiver.
  • PSU: DC 24V, 2.71A, Locking DC.
  • Chassis dimension: 250(w) x 44(h) x 200mm(d)
  • Bi-directional IR & RS232 control.


Video Input
Video Input (4) HDMI IN (1~4), (1) DP, (1) USB-C
Video Input Connector (4) Type-A female HDMI, (1) DisplayPort, (1) Type-C USB
Input Resolution HDMI: Up to 4K@30Hz 4:4:4
DP: Up to 4K@30Hz 4:4:4
USB-C: Up to 4K@30Hz 4:4:4
Video Output
Video Output (1) HDMI, (1) HDBaseT
Video Output Connector (1) Type-A female HDMI, (1) RJ45
Output Resolution HDMI: Up to 4K@30Hz 4:4:4
HDBaseT: Up to 4K@30Hz 4:4:4
HDMI Standard Up to 1.4
HDCP Version Up to 2.2
Audio Input
Audio Input (1) LINE, (1) MIC
Audio Input Connector (2) 3-pin terminal blocks
Frequency Response 20Hz ~ 20kHz, ±3dB
Max Input Level 2.0Vrms ± 0.1
L-R Level Deviation < 0.3dB, 1kHz sine at 0dBFS level (or max level before clipping)
Input Impedance > 10KΩ
LINE/MIC Audio Format PCM 2.0
HDMI/DP Audio Format PCM 2.0 48K
L+R Audio Output
Audio Output (1) L+R
Audio Output Connector (1) 5-pin terminal block
Frequency Response 20Hz ~ 20kHz, ±1dB
Max Output Level 2.0 ± 0.1Vrms
THD+N < 0.05%, 20Hz ~ 20kHz bandwidth, 1kHz sine at 0dBFS level (or max level)
SNR > 80dB, 20Hz ~ 20kHz bandwidth
Crosstalk Isolation < -70dB, 10kHz sine at 0dBFS level
L-R Level Deviation < 0.3dB, 1kHz sine at 0dBFS level (or max level before clipping)
Output Load Capability 1KΩ and higher (Supports 10x paralleled 10KΩ loads)
Noise Level -80dB
SPDIF Audio Output
Audio Out Connector (1) Toslink
Max Output level ±0.3dBFS
Frequency Response 20Hz ~ 20kHz, ±1dB
THD+N < 0.05%, 20Hz ~ 20kHz bandwidth, 1kHz sine at 0dBFS level (or max level)
Signal-to-Noise Ratio > 90dB, 20Hz ~ 20kHz bandwidth
Crosstalk isolation < -70dB, 10kHz sine at 0dBFS level (or max level before clipping)
Noise – 90dB
Audio Format PCM 2.0
Control port (1) CONTACT IN, (1) IR IN, (1) IR OUT, (1) IR EYE,

(1) FIRMWARE, (1) RS232, (1) TCP/IP

Control Connector (1) 5-pin terminal block, (3) 3.5mm jack, (1) Type-A USB,

(1) 3-pin terminal block, (1) RJ45

Operation Temperature -5℃ ~ +55℃
Storage Temperature -25℃ ~ +70℃
Relative Humidity 10% ~ 90%
External Power Supply Input: AC 100~240V, 50/60Hz; Output: 24V DC 5A
Power Consumption 90w (Max)
USB-C Power Charging 60w (Max)
Dimension (W*H*D) 250mm x 44mm x 200mm
Net Weight 1.6KG

 TPBHD70-R Receiver


Input and Output
Input (1) HDBT IN
Input Connector (1) RJ45
Output (1) HDMI OUT
Output Connector (1) Type-A female HDMI
Control (1) IR IN, (1) IR OUT, (1) RS232
Control Connector (2) 3.5mm jack, (1) 3-pin terminal block
Maximum Video Resolution 4K@30Hz 4:4:4, including 1080p@60Hz
Transmission Mode HDBaseT
Transmission Distance 1080p signal to 70m, 4K signal to 40m
Bandwidth 10.2Gbps
Video Standard HDMI 1.4 with HDCP 2.2
Power Consumption 7 watts
Operation Temperature -5℃ ~ +55℃
Storage Temperature -25℃ ~ +70℃
Operating Humidity 0% ~ 90%
Power Supply Input Power: 24VDC 1.25A or Power over HDBaseT (PoH);

AC Adaptor Input Power: 100~240VAC, 50/60Hz

Dimension (W*H*D) 115mmx16.2mm x109mm
Net Weight (g)


User Manual


Technical Sheet