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What is the HDX-400?

SmartAVI’s HDX-400 is a 3-port HDMI transmitter and splitter over CAT6 cabling. It can send any one HDMI signal to three remote displays, each up to 180 feet away from a source device. It is capable of resolutions up to 1080p (1920x1080 @ 60Hz) Full HD, and is plug-and-play for easy installation & use right out of the box.

Applications for the HDX-400

The HDX-400 is the perfect solution for broadcasting high-definition content easily and inexpensively from a single HDMI source to remote displays in retail spaces, office buildings, entertainment venues, schools, and even homes. The HDX-400 splits the signal into three outputs, allowing you to display 1080p (1920x1080 @ 60Hz) Full HD content in three different locations up to 180 feet away!


  • Transmit & split 1 HDMI signal to 3 remote displays
  • Local HDMI output for easy monitoring
  • Extends HDMI signals up to 180 feet
  • Supports 3D signals
  • Supports resolutions up to 1080p (1920x1080 @ 60Hz)
  • Supports DTS-HD/DolbyTrueHD/LPCM7.1/DTS/Dolby-AC3/DSD audio formats
  • No loss of signal quality (up to 150 ft from source)
  • LED status indicators
  • Plug-and-play for immediate use


  • (1) HDX-400S: 3-Port HDMI Transmitter and splitter
  • (1) Quick Start Installation Guide
  • Retail Locations
  • Bars/Lounges
  • Showroom Floors
  • Convention Booths
  • Hotel/Resort/Check-in Counters
  • Corporate/Educational Demonstrations
  • Hoses of Worship
  • Medical Facilities
  • Recording/Editing Studios
Dimensions5.375”W X 3”D X 1”H Storage Temperature-4 to 149 °F (-20 to 65 °C )
Video Interface HDMI
HDMI Resolution (Input and Output) 24/50/60fs/1080p/1080i/720p/576p/576i/480p/480i
Maximum Signal Extension Up to 180 ft.
Maximum Pixel Clock 225MHz
Maximum Rate 6.75Gbps
Input Video Signal 0.5~1.5Volts p-p
Output DDC signal 5Volts p-p (TT1L)
Current 3000mA
Audio Input Formats DTS-HD/Dolby-TrueHD/LPCM7.1/DTS/Dolby-AC3/DSD
Audio Output Formats LPCM7.1/DTS/Dolby-AC3/DSD
Power Adapter 5VDC 2A
Weight .35 lbs.
Dimensions 5.375”W X 3”D X 1”H
Working Temperature 32 to 122°F (0 to 50 °C )
Working Humidity Up to 85% RH (no condensation)
Storage Temperature -4 to 149 °F (-20 to 65 °C )
Storage Humidity Up to 90% RH (no condensation)
This is an example of what a setup would look like. For more detailed information on specific models, call Smart-AVI. HDX-400 Diagram2
Model# Description
HDX-400S HDMI 3-Port Transmitter over a single CAT6 cable. Includes: [HDX-400 and (PS5VDC2A)]
HDX-RX100S (Not included) Receiver for  HDMI over a single CAT6 cable. Includes: [HDX-RX100 and (PS5VDC2A)]