What Is the UHD12-EX230-K-1?
The OREI UHD12-EX230-K-1 is a 4K@60Hz 1x2 HDMI extender splitter with HDMI loop out, IR control, and Power over Cable. It distributes one HDMI source to one local display and up to two remote HDMI displays over CAT6 / CAT7 cable.
The kit includes one Transmitter, two Receivers, two IR Receiver cables, one IR Blaster cable, one 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 each remote display connects to HDMI OUT on one Receiver. CAT6 / CAT7 cables connect the Transmitter to each Receiver.
The UHD12-EX230-K-1 supports HDMI 2.0 and HDCP 2.2, with a video bandwidth of 18Gbps. It supports video resolutions up to 4K@60Hz, 12-bit color depth, HDR, LPCM, DTS, Dolby Digital, HDMI loop out, IR control, plug and play setup, and Power over Cable so only the Transmitter requires the included power adapter.
The UHD12-EX230-K-1 is useful for home theaters, retail displays, classrooms, offices, conference rooms, restaurants, bars, houses of worship, AV racks, showrooms, training rooms, and installations where one HDMI source needs to be duplicated to two remote displays with local loop out.
IMPORTANT — UHD12-EX230-K-1 Is a 1x2 HDMI Extender Splitter
The UHD12-EX230-K-1 distributes one HDMI source to up to two remote HDMI displays.
| Function | Support |
| 1 HDMI input | Supported |
| 2 remote HDMI outputs | Supported |
| HDMI loop out at Transmitter | Supported |
| One source to multiple displays | Supported |
| IR control | Supported |
| Point-to-point extension only | No |
| Matrix switching | Not supported |
| Extended desktop creation | Not supported |
This product duplicates the same HDMI source across the connected displays. It does not create separate extended screens.
IMPORTANT — Supports 4K@60Hz
The UHD12-EX230-K-1 supports video resolutions up to 4K@60Hz.
| Feature | Support |
| 4K@60Hz | Supported |
| HDMI 2.0 | Supported |
| HDCP 2.2 | Supported |
| Video bandwidth | 18Gbps |
| HDR | Supported |
| Color depth | 12-bit |
| Color space | YCbCr 4:4:4, YCbCr 4:2:2, YCbCr 4:2:0, RGB |
To get 4K@60Hz, the HDMI source, displays, HDMI cables, CAT cable, and source output settings must all support the required signal.
IMPORTANT — Extends up to 230ft Over CAT6 / CAT7
The UHD12-EX230-K-1 extends HDMI up to 230ft / 70m over CAT6 / CAT7 cable at 4K@60Hz.
| Cable Type | Maximum Distance |
| CAT6 / CAT7 | Up to 230ft / 70m |
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, IR control issues, or unstable 4K@60Hz performance.
IMPORTANT — Use Direct CAT Cable Connection
Connect each CAT output on the Transmitter directly to the CAT input on each Receiver using CAT6 / CAT7 cable.
Do not connect the CAT cable through:
- Network switch
- Router
- Internet network
- LAN switch
- Standard Ethernet network
This is a direct HDMI extender splitter over CAT cable. It is not an AV-over-IP system.
IMPORTANT — Power over Cable Is Supported
The UHD12-EX230-K-1 supports Power over Cable.
| Power Setup | Support |
| Power adapter at Transmitter end | Required |
| Receivers powered through CAT cable | Supported |
| Separate Receiver power normally required | No |
| Included power adapter | DC 12V/2A |
Only the Transmitter requires the included power adapter. The Receivers receive power through the CAT cable connection from the Transmitter.
The Receivers include DC 12V ports, but the manual notes that separate Receiver power is not needed during normal Power over Cable operation.
IMPORTANT — HDMI Loop Out Is Supported
The UHD12-EX230-K-1 includes HDMI OUT loop output on the Transmitter.
| Unit | HDMI Port | Function |
| Transmitter | HDMI IN | Connect HDMI source device |
| Transmitter | HDMI OUT | Connect local display |
| Receiver | HDMI OUT | Connect remote display |
The HDMI loop out is useful when a local display is needed near the HDMI source, such as in an AV rack, control room, equipment room, or source-side display location.
IMPORTANT — IR Control Is Supported
The UHD12-EX230-K-1 supports IR control.
| IR Cable | Connection | Placement |
| IR Blaster | Transmitter IR OUT | Near HDMI source device |
| IR Receiver | Receiver IR IN | Near remote display |
This allows the HDMI source device to be controlled from the Receiver / display side.
Use the source device remote, not the TV remote, when controlling the HDMI source from the Receiver location.
IMPORTANT — This Duplicates the Same Screen
The UHD12-EX230-K-1 is an HDMI extender splitter.
It can duplicate one HDMI source to multiple displays.
It cannot create separate extended screens from one computer.
| Computer Display Mode | Supported? |
| Duplicate / mirror same screen | Yes |
| Extend desktop as separate screens | No |
For PC extended desktop mode, a multi-output graphics card, docking station, or dedicated multi-display solution is required.
IMPORTANT — Audio Pass-Through Is Supported
The UHD12-EX230-K-1 supports HDMI audio pass-through.
Supported audio formats include:
| Audio Type | Supported Format |
| Uncompressed audio | LPCM |
| Compressed audio | DTS, Dolby Digital |
The connected HDMI source, display, AVR, soundbar, or audio system must also support the selected audio format.
Ports and Panel Layout
| Port / Button / Indicator | Unit | Function |
| DC 12V | Transmitter | Connect the included power adapter |
| IR OUT | Transmitter | Connect the included IR Blaster cable |
| HDMI IN | Transmitter | Connect HDMI source device such as DVD player, streaming device, media player, or computer |
| HDMI OUT | Transmitter | Connect local display |
| CAT 6 OUT 1–2 | Transmitter | Connect CAT6 / CAT7 cables to Receivers |
| Reset | Transmitter | Click to reset the Transmitter |
| Power Indicator | Transmitter | Shows power status |
| ON/OFF | Transmitter | Turn the Transmitter on or off |
| Reset | Receiver | Click to reset the Receiver |
| CAT 6 | Receiver | Connect CAT6 / CAT7 cable from Transmitter |
| Power Indicator | Receiver | Shows power status |
| DC 12V | Receiver | Power input available; Receiver normally powers through CAT cable |
| HDMI OUT | Receiver | Connect remote display |
| IR IN | Receiver | Connect the included IR Receiver cable |
Step-by-Step Setup
- Connect the HDMI source device to HDMI IN on the Transmitter.
Examples include a DVD player, Blu-ray player, cable box, streaming device, media player, laptop, desktop PC, DVR, NVR, game console, or HDMI matrix output.
- Connect a local display to HDMI OUT on the Transmitter if a source-side display is needed.
- Connect CAT6 / CAT7 cable from OUT 1 on the Transmitter to the CAT 6 port on Receiver 1.
- Connect CAT6 / CAT7 cable from OUT 2 on the Transmitter to the CAT 6 port on Receiver 2 if using the second Receiver.
- Connect each Receiver HDMI OUT to a TV, monitor, projector, or display.
- Connect the included DC 12V/2A power adapter to the Transmitter.
- Turn on the Transmitter using the ON/OFF switch.
- If using IR control, connect the IR Blaster cable to IR OUT on the Transmitter.
- Place the IR Blaster near the HDMI source device’s IR sensor.
- Connect the IR Receiver cable to IR IN on each Receiver.
- Place the IR Receiver near the remote display where the remote will be used.
- Power on the HDMI source and all connected displays.
- Check that the Transmitter and Receivers show power.
- Test video and audio on the local display and each remote display.
- Test IR source control from the Receiver location.
- If video does not display, try a lower source resolution, change the CAT or HDMI cables, and check whether HDMI OUT on the Transmitter has the same issue.
CAT Cable Requirement — Critical
Use high-quality CAT6 / CAT7 cable.
| Requirement | Specification |
| Cable type | CAT6 / CAT7 |
| Maximum distance | Up to 230ft / 70m at 4K@60Hz |
| Connection | Direct Transmitter-to-Receiver connection |
Poor or incorrectly terminated CAT cable may cause:
- No video
- Flickering
- Black screen
- Receiver not powering on
- 4K@60Hz not working
- Audio dropouts
- IR control issues
- Signal loss
- HDMI handshake issues
- Unstable performance
Use direct, properly terminated cable whenever possible.
HDMI Cable Requirement — Critical
Use high-quality HDMI cables, especially for 4K@60Hz.
Poor HDMI cables may cause:
- No picture
- Flickering
- Black screen
- HDR issues
- HDMI source not detected
- HDMI loop out not working
- Receiver HDMI OUT not working
- HDCP handshake issues
- Audio dropouts
For 4K@60Hz, use HDMI cables rated for 18Gbps.
For troubleshooting, test the HDMI source directly with the display before using the extender splitter.
IR Cable Requirement — Critical
Use the included IR cables for IR source control.
| IR Cable | Connects To | Purpose |
| IR Blaster cable | Transmitter IR OUT | Sends IR signal to the HDMI source |
| IR Receiver cable | Receiver IR IN | Receives remote control signal at the display side |
If IR control does not work:
- Confirm the IR Blaster is connected to IR OUT on the Transmitter
- Confirm the IR Receiver is connected to IR IN on the Receiver
- Place the IR Blaster near the source device’s IR sensor
- Use the HDMI source device remote
- Make sure the CAT connection is working properly
Power Requirement — Critical
The UHD12-EX230-K-1 uses one DC 12V/2A power adapter.
| Unit | Power |
| Transmitter | DC 12V/2A |
| Receiver | Powered through CAT cable using Power over Cable |
| Power Detail | Value |
| Power adapter input | AC 100–240V, 50/60Hz |
| Power adapter output | DC 12V/2A |
| Power consumption | 12W max |
| Receiver separate power | Not normally required |
If a Receiver does not power on, check the Transmitter power adapter, ON/OFF switch, CAT cable, CAT termination, and CAT output / input connections.
Understanding the Transmitter
The Transmitter is installed near the HDMI source.
It has:
- DC 12V power input
- IR OUT
- HDMI IN
- HDMI OUT loop output
- Two CAT outputs
- Reset button
- Power indicator
- ON/OFF switch
The Transmitter receives the HDMI signal from the source, provides HDMI loop out for a local display, sends the signal to up to two Receivers through CAT6 / CAT7 cable, and sends IR control back to the source device.
Understanding the Receiver
Each Receiver is installed near a remote display.
Each Receiver has:
- Reset button
- CAT 6 input
- Power indicator
- DC 12V input
- HDMI OUT
- IR IN
The Receiver receives signal and power through the CAT cable from the Transmitter, outputs HDMI to the connected display, and receives IR remote commands through the IR Receiver cable.
Understanding the Application Example
The application diagram shows a DVD source connected to HDMI IN on the Transmitter. A local UHD TV connects to HDMI OUT on the Transmitter. Two CAT6 cables connect the Transmitter to two Receivers. Each Receiver connects to a UHD TV using HDMI OUT. IR Receiver cables are connected at the Receiver sides, and the IR Blaster is connected at the Transmitter side so the DVD source can be controlled remotely.
This shows the main use case: distributing one HDMI source to one local display and two remote displays while allowing source control from the Receiver locations.
Understanding Power Indicators
| Indicator | Unit | Meaning |
| Power Indicator | Transmitter | Shows the Transmitter has power |
| Power Indicator | Receiver | Shows the Receiver has power through CAT cable or power input |
If a Receiver power indicator does not light, check the Transmitter power, ON/OFF switch, CAT cable, and cable termination.
Supported Video and Audio
The UHD12-EX230-K-1 supports video formats including:
| Supported Video |
| 4K@60Hz |
| YCbCr 4:4:4 |
| YCbCr 4:2:2 |
| YCbCr 4:2:0 |
| RGB |
| 12-bit color |
| HDR |
Supported audio formats include:
| Supported Audio |
| LPCM |
| DTS |
| Dolby Digital |
Supported Technical Specifications
| Specification | Support |
| Product Type | 4K@60Hz 1x2 HDMI extender splitter with loop out over CAT6 / CAT7 |
| HDMI Version | HDMI 2.0 |
| HDCP Version | HDCP 2.2 |
| Video Bandwidth | 18Gbps |
| Maximum Resolution | 4K@60Hz |
| Transmission Distance | Up to 230ft / 70m over CAT6 / CAT7 |
| HDR | Supported |
| Color Space | YCbCr 4:4:4, YCbCr 4:2:2, YCbCr 4:2:0, RGB |
| Color Depth | 12-bit |
| Audio Formats | LPCM, DTS, Dolby Digital |
| HDMI Loop Out | Supported on Transmitter |
| IR Control | Supported |
| Power over Cable | Supported |
| Plug and Play | Supported |
| Transmitter Input | HDMI IN, DC 12V |
| Transmitter Output | HDMI OUT, 2 x CAT RJ45 |
| Transmitter Control | IR OUT |
| Receiver Input | CAT RJ45, DC 12V |
| Receiver Output | HDMI OUT |
| Receiver Control | IR IN |
| Power Supply | Input: AC 100–240V 50/60Hz; Output: DC 12V/2A |
| Power Consumption | 12W max |
| Housing | Metal enclosure |
| Color | Black |
| Transmitter Dimensions | 154mm x 70mm x 23mm / 6.06in x 2.75in x 0.90in |
| Receiver Dimensions | 100mm x 88mm x 23mm / 3.93in x 3.46in x 0.90in |
| Transmitter Weight | 263g / 9.27oz |
| Receiver Weight | 199g / 7.01oz |
| Operating Temperature | 0°C to 70°C / 32°F to 158°F |
| Relative Humidity | 5–90% RH, non-condensing |
What Source Devices Is the UHD12-EX230-K-1 Compatible With?
The UHD12-EX230-K-1 is compatible with HDMI source devices such as:
- DVD players
- Blu-ray 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
- AV receivers with HDMI output
The source must output a supported HDMI resolution up to 4K@60Hz.
What Displays Is the UHD12-EX230-K-1 Compatible With?
The UHD12-EX230-K-1 can connect to HDMI displays such as:
- 4K TVs
- 1080p TVs
- Monitors
- Projectors
- Commercial displays
- Classroom displays
- Conference room displays
- Retail displays
- Digital signage displays
- Restaurant displays
- Bar displays
- Remote display locations
For 4K@60Hz, the display must support 4K@60Hz input.
Frequently Asked Questions
Q: What is the OREI UHD12-EX230-K-1 used for?
A: It is used to distribute one HDMI source to one local display and up to two remote HDMI displays over CAT6 / CAT7 cable.
Q: Does the UHD12-EX230-K-1 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 2.2.
Q: What video bandwidth does it support?
A: It supports 18Gbps video bandwidth.
Q: Does it support HDR?
A: Yes. HDR is supported.
Q: How far can it extend HDMI?
A: It extends HDMI up to 230ft / 70m at 4K@60Hz over CAT6 / CAT7 cable.
Q: What CAT cable should I use?
A: Use CAT6 or CAT7 cable.
Q: Can I connect it through a network switch?
A: No. It requires a direct CAT cable connection between the Transmitter and each Receiver.
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 CAT cable from the Transmitter.
Q: Do the Receivers need separate power adapters?
A: No. The included power adapter connects to the Transmitter only. The Receivers are powered through CAT cable using Power over Cable.
Q: What power adapter does it use?
A: It uses a DC 12V/2A power adapter.
Q: Does the Transmitter have HDMI loop out?
A: Yes. The Transmitter has HDMI OUT for connecting a local display.
Q: What is HDMI loop out used for?
A: HDMI loop out allows a local display to be connected near the HDMI source while the same signal is also sent to the remote displays.
Q: Does it support IR control?
A: Yes. It supports IR control using the included IR Blaster and IR Receiver cables.
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 Receiver?
A: The IR Receiver cable connects to IR IN on the Receiver.
Q: Can each display show different content?
A: No. This product duplicates the same HDMI source to all connected displays.
Q: Can I use this to extend my PC display to multiple locations?
A: You can duplicate the PC screen to multiple locations, but it will not create extended desktop mode.
Q: Can I connect only one Receiver instead of both?
A: Yes. You can use only the number of Receiver outputs needed.
Q: Does it support audio pass-through?
A: Yes. It supports HDMI audio pass-through.
Q: What audio formats are supported?
A: It supports LPCM, DTS, and Dolby Digital.
Q: Does it support Dolby Atmos?
A: Dolby Atmos is not listed in the manual.
Q: Does it support Dolby Vision?
A: Dolby Vision is not listed in the manual.
Q: Does it support RS-232?
A: RS-232 is not listed for this model.
Q: Does it support audio extraction?
A: Audio extraction is not listed for this model.
Q: Does it support EDID management?
A: EDID management is not listed for this model.
Q: What does the Reset button do?
A: The Reset button restarts the Transmitter or Receiver.
Q: What should I do if there is no video output?
A: Try a lower resolution from the source device, try changing the CAT cables or HDMI cables, and check whether HDMI OUT on the Transmitter has the same issue.
Q: What should I do if 4K@60Hz does not work?
A: Use high-quality HDMI cables, use CAT6 / CAT7 cable within 230ft / 70m, confirm the source and display support 4K@60Hz, and test with a lower resolution.
Q: What should I do if IR control does not work?
A: Confirm the IR Blaster is connected to IR OUT on the Transmitter, the IR Receiver is connected to IR IN on the Receiver, and the IR Blaster is placed near the HDMI source device’s IR sensor.
Q: What should I do if a Receiver does not power on?
A: Check the Transmitter power adapter, ON/OFF switch, CAT cable, CAT termination, CAT output port, and Receiver CAT input port.
Q: Does the UHD12-EX230-K-1 need external power?
A: Yes. Connect the included DC 12V/2A power adapter to the Transmitter. The Receivers are powered through CAT cable using Power over Cable.
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