UHD18-IPC230-K Overview and Use Cases

What Is the UHD18-IPC230-K?

The OREI UHD18-IPC230-K is a 4K@60Hz HDMI 1x8 extender splitter over CAT6 / CAT7 cable. It distributes one HDMI source to eight remote HDMI displays and also includes an HDMI output on the Transmitter for a local display.

The kit includes one Transmitter, eight Receivers, one IR Blaster cable, eight IR Receiver cables, one RS-232 terminal block, mounting brackets, screws, one DC 12V/5A power adapter, and a user manual. The HDMI source connects to HDMI IN on the Transmitter, the local display connects to HDMI OUT on the Transmitter, and the eight remote displays connect through the included Receivers using CAT6 / CAT7 cable.

The UHD18-IPC230-K supports HDMI 2.0 and HDCP 1.4 / 2.2, with a video bandwidth of 18Gbps. It supports video resolutions up to 4K@60Hz, 1080p@50/60Hz, 720p@50/60Hz, and multiple PC resolutions. It also supports LPCM, DTS-HD, DTS Audio, Dolby Digital 5.1, Power over Cable, RS-232 control, IR source control, S/PDIF audio output on each Receiver, and transmission distance up to 70m / 230ft. 

The UHD18-IPC230-K is useful for home entertainment systems, conference rooms, classrooms, retail displays, restaurants, bars, digital signage, studios, AV racks, and business environments where one HDMI source needs to be shown on up to eight displays.

IMPORTANT — UHD18-IPC230-K Is a 1x8 HDMI Extender Splitter

The UHD18-IPC230-K sends one HDMI source to eight remote HDMI displays.

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

IMPORTANT — Supports 4K@60Hz

The UHD18-IPC230-K supports video resolutions up to 4K@60Hz.

To get 4K@60Hz, the HDMI source, displays, HDMI cables, CAT cables, and source output settings must all support the required signal.

IMPORTANT — Maximum Distance Is 70m / 230ft

The extender delivers stable signal transmission when used within the correct cable distance.

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

Poor CAT cable, weak terminations, damaged connectors, couplers, wall plates, patch panels, or low-quality cable may cause no video, flickering, signal loss, or Receiver connection issues.

IMPORTANT — Power over Cable Is Supported

The UHD18-IPC230-K supports Power over Cable.

Only the Transmitter normally needs the included power adapter. The Receivers receive power through the connected CAT cables, which reduces cable clutter and simplifies installation.

IMPORTANT — Transmitter Has Local HDMI Output

The Transmitter includes HDMI OUT for a local display.

The local HDMI output and all eight Receiver outputs show the same HDMI source.

IMPORTANT — Receivers Have S/PDIF Audio Output

Each Receiver includes an S/PDIF optical audio output.

Each Receiver also includes an audio switch for the S/PDIF output.

Use the S/PDIF output when separate digital audio is needed near the remote display.

IMPORTANT — IR Source Control Is Supported

The UHD18-IPC230-K includes one IR Blaster cable and eight IR Receiver cables.

Typical source-control setup:

This allows the HDMI source to be controlled from the Receiver/display side.

Use the source device remote, not the TV remote, when controlling the HDMI source from a remote display location.

IMPORTANT — RS-232 Control Is Supported

The Transmitter includes RS-232 control.

RS-232 can be used for professional AV control, system integration, device control, and installation management.

IMPORTANT — This Product Duplicates, It Does Not Extend PC Desktop

The UHD18-IPC230-K can duplicate one HDMI source to multiple displays.

The manual specifically notes that this product duplicates the input source to multiple outputs and does not extend multiple screens.

IMPORTANT — Use High-Quality HDMI and Round-Shielded CAT6 Cables

The troubleshooting section recommends high-quality HDMI cables under 30ft and round-shielded CAT6 cables.

Poor HDMI or CAT cable quality may cause no video, unstable 4K@60Hz output, flickering, or signal loss.

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, cable box, satellite receiver, streaming device, media player, laptop, desktop PC, DVR, NVR, or HDMI matrix output. 
2. Connect a local display to HDMI OUT on the Transmitter if needed. 
3. Connect CAT OUT 1 on the Transmitter to Receiver 1 using CAT6 / CAT7 cable. 
4. Repeat the same connection for CAT OUT 2 through CAT OUT 8. 
5. Connect each Receiver HDMI OUT to a TV, monitor, projector, or display. 
6. Connect the included DC 12V/5A power adapter to the Transmitter. 
7. If using digital audio output, connect each Receiver S/PDIF port to a soundbar, AVR, amplifier, or audio device. 
8. Set the Receiver audio switch to S/PDIF or ARC based on the required audio source. 
9. If using IR control, connect the IR Blaster cable to IR OUT on the Transmitter. 
10. Place the IR Blaster near the HDMI source device’s IR sensor. 
11. Connect the IR Receiver cables to IR IN on the Receivers. 
12. Place each IR Receiver near the remote display. 
13. If using RS-232 control, connect the RS-232 terminal block to the control system. 
14. Power on the HDMI source, Transmitter, Receivers, displays, and audio devices. 
15. Check the Transmitter power indicator and Receiver power / signal indicators. 
16. Test local HDMI output, all Receiver HDMI outputs, S/PDIF audio output, IR control, and RS-232 control. 

CAT Cable Requirement — Critical

Use high-quality CAT6 / CAT7 cable.

Poor CAT cable may cause:

• No video 
• Flickering 
• Black screen 
• Receiver not powering correctly 
• Receiver power / signal indicator flashing 
• 4K@60Hz not working 
• Audio dropouts 
• IR control issues 
• Reduced transmission distance 

Use direct, properly terminated cable runs whenever possible.

HDMI Cable Requirement — Critical

Use high-quality HDMI cables under 30ft.

Poor HDMI cables may cause:

• No picture 
• Flickering 
• Black screen 
• 4K@60Hz not working 
• HDMI source not detected 
• Local HDMI OUT not working 
• Receiver HDMI OUT not working 
• HDCP handshake issues 
• Audio dropouts 

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

Power Requirement — Critical

The UHD18-IPC230-K uses one DC 12V/5A power adapter at the Transmitter.

If a Receiver does not power or does not show signal, check the Transmitter power adapter, CAT cable, CAT output port, and Receiver connection.

Understanding the Transmitter

The Transmitter is installed near the HDMI source.

It has:

• HDMI IN 
• HDMI OUT local display output 
• Eight CAT OUT ports 
• EDID DIP switch 
• IR OUT 
• RS-232 
• Reset button 
• DC 12V power input 
• Blue power indicator 

The Transmitter duplicates the HDMI source signal to one local HDMI output and eight remote Receiver outputs.

Understanding the Receivers

Each Receiver is installed near a remote display.

Each Receiver has:

• CAT IN 
• HDMI OUT 
• S/PDIF optical audio output 
• IR IN 
• Audio switch 
• Reset button 
• Power / Signal indicator 
• Optional DC 12V input 

The Receiver converts the CAT signal back to HDMI and outputs video to the connected display.

Understanding Local HDMI Output

The Transmitter HDMI OUT is used for a nearby display.

This is useful for:

• AV racks 
• Source-side monitoring 
• Classrooms 
• Conference rooms 
• Restaurants 
• Bars 
• Digital signage testing 
• Retail display systems 

The local display and all eight remote displays show the same source.

Understanding S/PDIF Audio Output

Each Receiver includes S/PDIF output for digital audio.

Use S/PDIF output for:

• Soundbars 
• AV receivers 
• Amplifiers 
• Digital audio receivers 
• Audio processors 
• Speaker systems with optical input 

If S/PDIF audio does not work, check the Receiver audio switch, source audio format, optical cable, and connected audio device input.

Understanding EDID DIP Switch

The Transmitter includes an EDID DIP switch.

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

Use EDID when:

• Displays show no signal 
• One display supports 4K but another does not 
• Audio format does not work 
• The source outputs the wrong resolution 
• The system needs a stable shared format for all displays 

For multi-display installations, choose an EDID setting that all connected displays can support.

Understanding IR Control

IR control lets the HDMI source be controlled from remote display locations.

Typical setup:

The manual states that the IR Receiver should connect to IR IN on the Receiver, and the IR Blaster should be connected on the Transmitter side.

Understanding Signal Indicators

Use these indicators first when troubleshooting video or connection issues.

Supported Video and Audio

The UHD18-IPC230-K supports video formats including:

Supported audio formats include:

Supported Technical Specifications

What Source Devices Is the UHD18-IPC230-K Compatible With?

The UHD18-IPC230-K 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 
• Game consoles 
• HDMI matrix outputs 
• HDMI switch outputs 

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

What Displays Is the UHD18-IPC230-K Compatible With?

The UHD18-IPC230-K can connect to HDMI displays such as:

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

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

What Audio Devices Is the UHD18-IPC230-K Compatible With?

The Receiver S/PDIF output can connect to:

• Soundbars 
• AV receivers 
• Amplifiers 
• Audio processors 
• Digital audio receivers 
• Speaker systems with optical / Toslink input 

Use S/PDIF output when separate digital audio is needed at one or more Receiver locations.

Frequently Asked Questions

Q: What is the OREI UHD18-IPC230-K used for? 
A: It is used to split and extend one HDMI source to eight remote HDMI displays over CAT6 / CAT7 cable, with one local HDMI output on the Transmitter.

Q: Is the UHD18-IPC230-K a splitter or extender? 
A: It is both. It is a 1x8 HDMI extender splitter.

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

Q: How many remote outputs does it support? 
A: It supports eight remote Receiver outputs.

Q: How many Receivers are included? 
A: Eight Receivers are included.

Q: Does the Transmitter have HDMI loop output? 
A: Yes. The Transmitter has HDMI OUT for a local display.

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

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 2.0.

Q: What HDCP version does it support? 
A: It supports HDCP 1.4 and HDCP 2.2.

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

Q: How far can it extend HDMI? 
A: It extends video signals up to 70m / 230ft.

Q: What CAT cable should I use? 
A: Use CAT6 or CAT7 cable. The manual recommends round-shielded CAT6 cable for best results.

Q: Can I connect the CAT outputs through a network switch? 
A: No. Connect each CAT OUT directly to a Receiver CAT IN.

Q: Is this AV over IP? 
A: No. It is a direct HDMI extender splitter over CAT cable.

Q: Does it support Power over Cable? 
A: Yes. The Receivers are powered through the connected CAT cables.

Q: Do the Receivers need separate power adapters? 
A: Normally no. The Receivers get power from the Transmitter through CAT cable.

Q: What power adapter does it use? 
A: The Transmitter uses a DC 12V/5A power adapter.

Q: Does it support IR control? 
A: Yes. It includes one IR Blaster cable and eight IR Receiver cables for source control from Receiver locations.

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

Q: Which IR cable connects to the Receivers? 
A: The IR Receiver cables connect to IR IN on the Receivers.

Q: Does it support RS-232? 
A: Yes. The Transmitter includes RS-232 control.

Q: Does it support S/PDIF audio output? 
A: Yes. Each Receiver has an S/PDIF optical output.

Q: What does the Receiver audio switch do? 
A: It selects whether the S/PDIF output uses audio from the HDMI source device or ARC audio from the TV connected to the Receiver.

Q: What audio formats are supported? 
A: It supports LPCM, DTS-HD, DTS Audio, and Dolby Digital 5.1.

Q: Does it support Dolby Atmos? 
A: Dolby Atmos is not listed in the manual.

Q: Does it show different content on each display? 
A: No. It duplicates the same HDMI source to all connected displays.

Q: Can it create extended desktop across eight displays? 
A: No. It duplicates the input source to multiple outputs.

Q: Can it extend beyond 230ft? 
A: The manual says signal may work beyond the listed distance, but video quality decreases as distance increases, especially when using shielded CAT6 cable.

Q: Can I daisy chain this product with another extender? 
A: Yes. The manual says it can be daisy chained with another set of the same model, but additional Receivers are usually the better option for adding more displays.

Q: Can I purchase additional Receivers? 
A: Yes. The manual says replacement parts can be purchased from the website or by contacting OREI support.

Q: What should I do if there is no video from a Receiver? 
A: Check if the power and link indication LEDs are lighting on both ends, change the HDMI cable going to the display, change the CAT cable, check if the Transmitter HDMI OUT is working, and press the Receiver reset button.

Q: What should I do if there is no video from both the Receiver and Transmitter HDMI OUT? 
A: Check power and link LEDs, change HDMI cables, change the CAT cable, and check whether the Transmitter HDMI OUT is working.

Q: What should I do if 4K@60Hz does not work on the Receiver end? 
A: Check that the display settings are set to 4K, use an HDMI cable that supports 4K@60Hz, check CAT cable length, confirm Transmitter HDMI OUT works, and confirm the source video output is set to 4K.

Q: What should I do if only one Receiver has no video? 
A: Check that Receiver’s HDMI cable, CAT cable, display input, Receiver reset button, and power / signal indicator. Also test that Receiver on another CAT output.

Q: What should I do if all Receivers have no video? 
A: Check the Transmitter power adapter, HDMI source, HDMI IN cable, local HDMI OUT, CAT cables, and source output settings.

Q: What should I do if S/PDIF audio does not work? 
A: Check the Receiver audio switch, S/PDIF cable, source audio setting, and whether the audio device supports the selected audio format.

Q: What should I do if IR control does not work? 
A: Connect the IR Blaster to IR OUT on the Transmitter and the IR Receiver to IR IN on the Receiver. Place the IR Blaster near the HDMI source device’s IR sensor.

Q: Does the UHD18-IPC230-K need external power? 
A: Yes. Connect the included DC 12V/5A power adapter to the Transmitter. The Receivers are powered through CAT cable using Power over Cable.