HDMI extender with technology: enhanced ultra-HD 4K resolution and signal range up to 450 feet. Capable of POE (Power Over Ethernet).


The RK8-HDX-ULT is the perfect solution for extending 4K HDMI signals to 8 remote locations 300 feet via PoE or up to 450 feet when both sides are powered, ensuring peak performance when transmitting ultra-high quality picture resolutions. The RK8-HDX-ULT is the perfect extender solution for any system, and works in tandem with SmartAVI matrixes for robust routing configurations. Plus, with RS-232 and IR remote control, taking command is convenient and easy every time!

It is the ideal way to consolidate up to eight workstation computers into one location. It is fully compatible with MAC, PC and LINUX HDMI standards. Up to eight displays can be extended easily from a rack without the mess or expense of multiple extenders. Rather than buy multiple extenders for rack components, and having to find power strips or numerous power outlets for the adapters, the SmartAVI rack series of extenders allows for up to eight transmitters and eight receivers with only one power supply.

Whether it’s for a home entertainment system or a commercial installation, the RK8-HDX-ULT delivers flexibility and control. Don’t let the distance bring your system down: let the RK8-HDX-ULT extend your reach today!


  • Extends HDMI, IR, and Power Output over Cat5e/6
  • Extends IR Control Signals for Remote Control
  • Supports 1080p/60fps and 4K/30Hz resolution
  • Supports Power over Ethernet (PoE) up to 300 ft
  • Transmits up to 450 feet when both sides are powered
  • Data Signals up to 3.4Gbps
  • HDCP compliant; EDID learning
  • Bi-directional IR and RS-232 control
  • LED status indicators
  • Rack mountable
  • Up to 8 units on single rack
  • Home Theater
  • Corporate/Educational Presentations
  • Call Centers
  • Industrial (Long-Range Workstation Isolation)
  • Information Terminals/Kiosks
  • Airport Installations (Air Traffic Control/Passenger Information)
  • Educational Environments with Remote Displays
Video Interface HDMI 1.3 (HDCP Compliant)
Resolutions 800×600, 1024×768 , 1280×1024, 1366×768, 1920×1200, 480i, 720p, 1080i, 1080p, 4K x 2K @30Hz @24bit
Color Depth Deep Color 36/30/24 Bit at 1080p and 3D
Audio Format Up to PCM 8 channel, Dolby Digital TrueHD, and DTS-HD Master Audio
IR Range 38kHz, 56kHz
Video Bandwith 10.2Gbps
Input Video Signal 1.2 Volts P-P
Input DDC Signal 5 Volts (TTL)
I/O Connector (Transmitter)
Input 8 x (HDMI-A) 19PIN Socket
8 x 3.5mm Jack for IR Receiver
Output 8 x RJ45 Jack
I/O Connector (Receiver)
Input 1 x RJ45 Jack
1 x 3.5mm Jack for IR Receiver
Output 1 x 3.5mm Jack for IR Emitter
1 x HDMI-A 19PIN Socket
MECHANICAL – Transmitter
Dimensions 17″H x 6″W x 1.7″D
Weight 3.26 lbs
Power 110/220V
Operating Temperature +0 to +40° C (+32° to 104° F)
Humidity 10% to 85% (Non-condensing)
Storage Temperature -20° to +60°C (-4° to +140° F)
Certificate FCC, CE, RoHS
Power Adapter UL, CE, FCC, RoHS
Part No. Description
RK8-HDX-ULT-S Rack for 8 HDMI & IR Extenders over a Single Cat5e/6 Cable. Includes: [RK8-HDX-ULT-TX and (CCWPWR)]
HDX-ULT-RX-S (Optional) HDX Receiver. HDMI Receiver over Cat5e/6 STP. Includes: [HDX-ULT-RX & (PS12VDC2A)]
Quick Start Guide

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