UHD12-EX115-K Overview and Use Cases

What Is the UHD12-EX115-K?

The OREI UHD12-EX115-K is an 18Gbps HDMI 1x2 splitter extender over CAT6 / CAT6a / CAT7 cable. It distributes one HDMI source signal to two remote HDMI displays and also provides an HDMI loop output on the Transmitter for a local display.

The kit includes one Transmitter, two Receiver units, one IR Blaster cable, two IR Receiver cables, one 12V/1A locking power adapter, and a user manual. The HDMI source connects to HDMI IN on the Transmitter, the local display connects to HDMI LOOP OUT if needed, and the two remote displays connect through the CAT Receivers.

This splitter extender supports HDMI 2.0b and HDCP 2.2 / 1.x, with a video bandwidth of 18Gbps. It supports video resolutions up to 4K@60Hz 4:4:4, HDR, HDR10+, HLG, Dolby Vision, HDMI loop output, one-way IR source control from the Receiver side, audio de-embedding through coaxial and L/R outputs, advanced EDID management, ASCII command control, and one-way POC from the Transmitter to the Receivers. It extends 4K@60Hz up to 115ft / 35m, 4K@30Hz up to 164ft / 50m, and 1080p@60Hz up to 197ft / 60m over CAT6 / CAT6a / CAT7 cable. 

This product is useful for classrooms, conference rooms, churches, restaurants, bars, retail displays, digital signage, sports viewing areas, AV racks, and commercial installations where one HDMI source needs to be shown on two remote displays.

IMPORTANT — This Is a 1x2 HDMI Splitter Extender

This product sends one HDMI source to two remote displays.

This device duplicates one HDMI source. It does not create separate independent video outputs or extended desktop screens.

IMPORTANT — Supports 4K@60Hz 4:4:4

This splitter extender supports video resolutions up to 4K@60Hz 4:4:4.

To get 4K@60Hz 4:4:4, the HDMI source, displays, HDMI cables, CAT cable, and EDID setting must all support the required signal.

IMPORTANT — Maximum Distance Depends on Resolution

The extender delivers stable signal transmission when used within the correct distance range and with good-quality cable.

For best performance, use high-quality CAT6 / CAT6a / CAT7 cable.

Poor cable quality, damaged connectors, weak terminations, couplers, or long patching paths may reduce performance.

IMPORTANT — Use Direct CAT Cable Connections

Each Receiver should connect directly to the Transmitter using CAT6 / CAT6a / CAT7 cable.

Do not connect the CAT outputs through:

• Network switch 
• Router 
• Internet network 
• LAN switch 
• Standard Ethernet network 

This is not an AV-over-IP system. The CAT cable is used as a direct HDMI extension path between the Transmitter and Receivers.

The manual also states that direct interconnection should be used and cross connection should not be used. The page 3 diagram shows the direct interconnection method using T568B wiring.

IMPORTANT — One-Way POC Is Supported

This product supports one-way Power Over Cable from the Transmitter to the Receivers.

The included 12V/1A locking power adapter connects to the Transmitter. The Receivers can be powered through the CAT cables.

IMPORTANT — HDMI Loop Output Is on the Transmitter

The Transmitter includes HDMI LOOP OUT.

This allows a local display to be connected near the HDMI source.

Example setup:

The local display and both remote displays show the same HDMI source.

IMPORTANT — Audio De-Embedding Is Supported

The Transmitter includes coaxial and L/R audio outputs.

Use these outputs to connect audio to an amplifier, powered speakers, audio receiver, or sound system near the Transmitter.

If analog audio does not work, set the HDMI source audio output to PCM / Stereo.

IMPORTANT — One-Way IR Control Is Supported

This product supports one-way IR control from the Receiver side to the Transmitter side.

Typical setup:

• Connect the IR Blaster cable to IR OUT on the Transmitter. 
• Place the IR Blaster near the HDMI source device’s IR window. 
• Connect the IR Receiver cables to IR IN on the Receivers. 
• Place each IR Receiver near the remote display where the source remote will be used. 

Use the HDMI source remote, not the TV remote, to control the HDMI source.

The manual lists IR working distance as 0–5m at ±45° and 0–8m at ±90°.

IMPORTANT — Advanced EDID Management Is Included

The Transmitter includes an EDID dial switch.

EDID options include:

Use EDID management when there is no video, wrong resolution, audio compatibility issue, or mixed display capability.

IMPORTANT — ASCII Command Control Is Supported

The SERVICE port can be used for firmware updates or serial command control.

Default serial settings:

ASCII commands can control or check:

• Power 
• Reboot 
• Factory reset 
• Device model 
• Firmware version 
• Input connection status 
• HDMI loop output status 
• CAT output status 
• HDMI loop stream on / off 
• CAT output stream on / off 
• HDCP status 
• CAT distance mode 
• Audio mute / unmute 
• EDID settings 

This is useful for professional AV control, troubleshooting, and installation tuning.

Ports and Panel Layout

Step-by-Step Setup

1. Connect the HDMI source device to HDMI IN on the Transmitter. 
   Examples include a Blu-ray player, DVD player, cable box, streaming device, DVR, NVR, laptop, or HDMI matrix output. 
2. Connect a local display to HDMI LOOP OUT on the Transmitter if needed. 
3. Connect CAT OUTPUT 1 on the Transmitter to CAT IN on Receiver 1 using CAT6 / CAT6a / CAT7 cable. 
4. Connect CAT OUTPUT 2 on the Transmitter to CAT IN on Receiver 2 using CAT6 / CAT6a / CAT7 cable. 
5. Connect each Receiver HDMI OUT to a TV, projector, monitor, or display. 
6. Connect the included 12V/1A locking power adapter to the Transmitter. 
7. If using audio de-embedding, connect COAX AUDIO OUT or L/R AUDIO OUT to an amplifier, speaker system, or audio receiver. 
8. If using IR control, connect the IR Blaster cable to IR OUT on the Transmitter. 
9. Place the IR Blaster near the HDMI source device’s IR window. 
10. Connect IR Receiver cables to IR IN on the Receivers. 
11. Place each IR Receiver near the remote display. 
12. Set the EDID dial switch based on the required video and audio format. 
13. Power on the HDMI source, displays, Transmitter, Receivers, and audio equipment. 
14. Check the Power, IN, LOOP, OUT, link, and data signal indicators. 
15. Test video, audio, HDMI loop output, IR control, and each Receiver output. 

CAT Cable Requirement — Critical

Use high-quality CAT6 / CAT6a / CAT7 cable.

Poor CAT cable may cause:

• No video 
• Flickering 
• Black screen 
• Receiver not powering on 
• Data signal indicator not lighting 
• 4K@60Hz not working 
• Audio dropouts 
• IR control issues 
• Shorter working distance 

Use direct cable runs whenever possible.

HDMI Cable Requirement — Critical

Use HDMI cables rated for 18Gbps when using 4K@60Hz 4:4:4.

Poor HDMI cables may cause:

• No picture 
• Flickering 
• Black screen 
• HDR issues 
• Dolby Vision issues 
• Audio dropouts 
• HDCP handshake issues 
• No signal on HDMI loop output 
• No signal on Receiver HDMI OUT 

For troubleshooting, test the HDMI source directly with the display before using the splitter extender.

Power Requirement — Critical

This product uses one DC 12V/1A locking power adapter.

The maximum power consumption is listed as 8.28W.

If a Receiver does not power on, check the Transmitter power, CAT cable, CAT output, and Receiver connection.

Understanding the Transmitter

The Transmitter is installed near the HDMI source.

It has:

• HDMI IN 
• HDMI LOOP OUT 
• Two CAT outputs 
• COAX AUDIO OUT 
• L/R AUDIO OUT 
• IR OUT 
• EDID dial switch 
• SERVICE port 
• DC 12V power input 
• Power switch 
• Power, IN, LOOP, and OUT LEDs 

The Transmitter splits the HDMI source signal and sends it to the local display and two remote CAT Receivers.

Understanding the Receivers

Each Receiver is installed near a remote display.

Each Receiver has:

• CAT IN 
• HDMI OUT 
• IR IN 
• SERVICE port 
• Optional DC 12V input 
• Power indicator 
• Data signal indicator 

The Receiver converts the CAT signal back to HDMI for the display.

Understanding HDMI Loop Output

The HDMI LOOP OUT port lets a display near the source show the same HDMI signal.

This is useful in AV racks, source rooms, control stations, classrooms, bars, restaurants, and commercial display systems where the source-side location also needs a screen.

Understanding Audio De-Embedding

Audio de-embedding allows audio from the HDMI signal to be output separately from the Transmitter.

For analog audio output, set the HDMI source audio to PCM / Stereo.

Understanding EDID Management

EDID tells the HDMI source what video and audio format to output.

Use EDID when:

• There is no video 
• Displays show the wrong resolution 
• Audio does not work 
• 4K@60Hz does not display correctly 
• HDR or Dolby Vision does not work correctly 
• Different displays support different formats 

The EDID dial switch can choose a preset, copy EDID from the HDMI loop output, copy EDID from CAT outputs, or allow PC control mode.

Understanding IR Control

IR control allows the source device to be controlled from the Receiver side.

Typical setup:

Do not swap the IR Receiver and IR Blaster cables because their pin definitions are different.

Understanding Signal Indicators

Use these indicators first when troubleshooting.

Supported Video and Audio

This product supports video formats including:

Supported HDMI audio formats include:

Supported de-embedded audio:

Supported Technical Specifications

What Source Devices Is This Product Compatible With?

This product is compatible with HDMI source devices such as:

• Blu-ray players 
• DVD players 
• Cable boxes 
• Satellite receivers 
• Streaming devices 
• Media players 
• Desktop PCs 
• Laptops with HDMI output 
• DVRs 
• NVRs 
• HDMI matrix outputs 
• HDMI switch outputs 
• AV receivers with HDMI output 

The source must output a supported HDMI resolution up to 4K@60Hz.

What Displays Is This Product Compatible With?

This product can connect to HDMI displays such as:

• 4K TVs 
• 1080p TVs 
• Projectors 
• Monitors 
• Commercial displays 
• Digital signage screens 
• Classroom displays 
• Conference room displays 
• Restaurant TVs 
• Bar displays 
• Retail displays 
• Local display near the source 
• Remote displays through CAT Receivers 

For 4K@60Hz, the display must support 4K@60Hz input.

What Audio Devices Is This Product Compatible With?

The audio outputs can connect to:

• Amplifiers 
• AV receivers 
• Powered speakers 
• Audio processors 
• Distributed audio systems 
• Classroom audio systems 
• Conference room audio systems 
• Restaurant audio systems 

Use COAX output for digital audio and L/R output for analog stereo audio.

Frequently Asked Questions

Q: What is this product used for? 
A: It is used to split and extend one HDMI source to two remote HDMI displays over CAT6 / CAT6a / CAT7 cable.

Q: Is it a splitter or extender? 
A: It is both. It is a 1x2 HDMI splitter extender over CAT cable.

Q: How many HDMI inputs does it have? 
A: It has one HDMI input.

Q: How many CAT outputs does it have? 
A: It has two CAT outputs.

Q: How many Receivers are included? 
A: Two Receiver units are included.

Q: Does it support a local display? 
A: Yes. The Transmitter has HDMI LOOP OUT for a local display.

Q: Does it support 4K@60Hz? 
A: Yes. It supports up to 4K@60Hz 4:4:4.

Q: Does it support 8K? 
A: No. It supports up to 4K@60Hz.

Q: Does it support 4K@120Hz? 
A: No. It does not support 4K@120Hz.

Q: What HDMI version does it support? 
A: It supports HDMI 2.0b.

Q: What HDCP version does it support? 
A: It supports HDCP 2.2 and HDCP 1.x.

Q: What video bandwidth does it support? 
A: It supports 18Gbps video bandwidth.

Q: Does it support HDR? 
A: Yes. It supports HDR10, HDR10+, HLG, and Dolby Vision.

Q: How far can it extend 4K@60Hz? 
A: It extends 4K@60Hz up to 115ft / 35m.

Q: How far can it extend 4K@30Hz? 
A: It extends 4K@30Hz up to 164ft / 50m.

Q: How far can it extend 1080p@60Hz? 
A: It extends 1080p@60Hz up to 197ft / 60m.

Q: What CAT cable should I use? 
A: Use high-quality CAT6 / CAT6a / CAT7 cable.

Q: Can I connect the CAT outputs through a network switch? 
A: No. The CAT outputs should connect directly to the included Receivers.

Q: Is this AV over IP? 
A: No. It is a direct CAT splitter extender, not an AV-over-IP system.

Q: Does it support POC? 
A: Yes. It supports one-way Power Over Cable from the Transmitter to the Receivers.

Q: Do the Receivers need separate power adapters? 
A: Normally no. The Receivers can be powered through the CAT cables from the Transmitter.

Q: What power adapter is included? 
A: The package includes one 12V/1A locking power adapter.

Q: Does it support audio extraction? 
A: Yes. The Transmitter has coaxial and L/R audio outputs.

Q: What audio format is supported from analog L/R output? 
A: Analog L/R output supports PCM 2.0CH.

Q: What audio formats are supported from coaxial output? 
A: Coaxial output supports LPCM 2.0, LPCM 5.1, and Dolby Digital 2/5.1CH.

Q: Does it support IR control? 
A: Yes. It supports one-way IR control from the Receiver side to the Transmitter side.

Q: Which IR cable goes on the Transmitter? 
A: The IR Blaster cable connects to IR OUT on the Transmitter.

Q: Which IR cable goes on the Receiver? 
A: The IR Receiver cable connects to IR IN on the Receiver.

Q: Does it support RS-232 pass-through? 
A: RS-232 pass-through is not listed for this model.

Q: Does it support EDID management? 
A: Yes. It supports advanced EDID management through the EDID dial switch and ASCII commands.

Q: Can it copy EDID from the local display? 
A: Yes. It can copy EDID from HDMI LOOP OUT.

Q: Can it copy EDID from CAT outputs? 
A: Yes. It can copy EDID from CAT OUT 1 or CAT OUT 2.

Q: Does it create extended desktop across two displays? 
A: No. It duplicates one HDMI source to the connected displays.

Q: What should I do if there is no video? 
A: Check the power adapter, HDMI source, HDMI cables, CAT cable, EDID setting, Receiver connection, display input, and signal indicators.

Q: What should I do if one Receiver has no signal? 
A: Check that Receiver’s CAT cable, HDMI cable, display input, CAT IN connection, and power/data indicators. Also test that Receiver on the other CAT output port.

Q: What should I do if both Receivers have no signal? 
A: Check the Transmitter power, HDMI source output, EDID setting, and HDMI LOOP OUT on the Transmitter.

Q: What should I do if 4K@60Hz does not work? 
A: Use 18Gbps HDMI cables, high-quality CAT6 / CAT6a / CAT7 cable, keep the run within 115ft / 35m, confirm the source and display support 4K@60Hz, and choose a compatible EDID setting.

Q: What should I do if analog audio output does not work? 
A: Set the HDMI source audio output to PCM / Stereo and connect the L/R output to an amplifier or powered speaker.

Q: What should I do if IR control does not work? 
A: Confirm the IR Receiver cable is connected to Receiver IR IN, the IR Blaster cable is connected to Transmitter IR OUT, and the IR Blaster is placed near the HDMI source device’s IR sensor.

Q: Does this product need external power? 
A: Yes. Connect the included DC 12V/1A locking power adapter to the Transmitter. The Receivers can be powered through the CAT cables by POC.