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This LINK-MI LM-EX21B 50m HDMI Extender includes one transmitter and one receiver, allows HDMI audio/video signals and IR to be transmitted over a 50m single cat5e/6 cable, and supports 3D 1080P HD Video, with Wide-band ( 38-56KHz ) Bi-Directional IR Control.


  • Allows HDMI Audio/Video Signals and IR to be transmitted over single Cat5e/6 Cable.
  • Transmits a wide-band (38K-56KHz) Bi-Directional IR control signal together with the HDMI signal.
  • Supports 24bit Deep Color. Supports 3D video format. Supports PCM ,Dolby Digital, and DTS Digital Surround.
  • Automatically adjusts feedback, equalization and amplification.
  • EDID DIP switch on Transmitter to enhance EDID communication between sources and displays.
  • Follows IEEE-568B cable termination standards.
  •  Data transfer speed 6.75 Gbps.


Model LM-EX21B
Operating Temperature -5 to 35℃
Operating Humidity 5% to 90%RH (No Condensation)
Data Transfer Speed 6.75Gbps
Resolution Outputs 1080p/1080i/720p/576p/480p
Audio Format Supports DTS-HD Master Audio, Dolby True HD, multi-channel 5.1, stereo etc
Output Video Signal HDMI
Power Supply DC 5V
Power Consumption 4W (max)
Transmission Distance 1080p up to 50m
IR Wavelength 940nm
IR Frequency 38KHz – 56KHz
Product Weight 319g (1 pair)
Package Contents 1 x HDMI Extender Transmitter
1 x HDMI Extender Receiver
2 x IR TX Emitter
2 x IR RX Receiver
2 x 5V/1A DC Adapter
1 x User Manual

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