What Is the EX230UHD?
The OREI EX230UHD is an 18Gbps HDMI extender over CAT5e / CAT6 cable. It extends one HDMI source to one HDMI display up to 230ft / 70m using HDBaseT technology.
The kit includes one HDMI 18Gbps Transmitter, one HDMI 18Gbps Receiver, two Wideband IR Tx cables, two Wideband IR Rx cables, one 24V/1A power adapter, and a user manual. The HDMI source connects to HDMI IN on the Transmitter, the display connects to HDMI OUT on the Receiver, and a CAT5e / CAT6 cable connects the Transmitter HDBaseT OUT to the Receiver HDBaseT IN.
The EX230UHD supports HDMI 2.0b, HDCP 2.2 / 1.4, and DVI compliance, with a video bandwidth of 18Gbps. It supports video resolutions up to 4K2K@50/60Hz YUV 4:4:4, 4K2K@30Hz, 1080p@120Hz, and 1080p 3D@60Hz. It also supports 10-bit HDR pass-through, HDMI High Bit Rate audio pass-through, CEC bypass, bidirectional IR, bidirectional RS-232, and POC so only one side needs the included 24V/1A power supply.
The EX230UHD is useful for home theaters, classrooms, conference rooms, projector setups, AV racks, digital signage, control systems, and installations where HDMI needs to be extended over CAT cable with IR and RS-232 control.
IMPORTANT — EX230UHD Is an HDMI Extender, Not a Splitter
The EX230UHD extends one HDMI source to one HDMI display.
| Function | Support |
| 1 HDMI input | Supported |
| 1 HDMI output | Supported |
| Point-to-point HDMI extension | Supported |
| One source to one display | Supported |
| Multiple displays | Not supported by itself |
| Matrix switching | Not supported |
| Extended desktop creation | Not supported |
This product does not split one source to multiple displays. It extends a single HDMI signal from the Transmitter to the Receiver.
IMPORTANT — Supports 4K@60Hz YUV 4:4:4
The EX230UHD supports video resolutions up to 4K2K@50/60Hz YUV 4:4:4.
Supported video features include:
| Feature | Support |
| 4K2K@50/60Hz YUV 4:4:4 | Supported |
| 18Gbps video bandwidth | Supported |
| HDMI 2.0b | Supported |
| HDCP 2.2 / 1.4 | Supported |
| 10-bit HDR pass-through | Supported |
| CEC bypass | Supported |
| DVI compliance | Supported |
To get 4K@60Hz, the HDMI source, display, HDMI cables, CAT cable, and source output settings must all support the required signal.
IMPORTANT — Maximum Distance Depends on Resolution and Signal Type
The EX230UHD supports up to 230ft / 70m over CAT6 cable, depending on resolution and signal format.
| Resolution / Signal | Maximum Distance Over CAT6 |
| 1080p@60Hz 36-bit | 70m / 230ft |
| 3D 1080p@30Hz 36-bit | 70m / 230ft |
| 1080p@60Hz 48-bit | 40m / 131ft |
| 1080p@120Hz 24-bit | 40m / 131ft |
| 3D 1080p@60Hz 36-bit | 40m / 131ft |
| 4K2K@30Hz 24-bit | 40m / 131ft |
| 4K2K@50/60Hz YUV 4:2:0 | 40m / 131ft |
| 4K2K@50/60Hz YUV 4:4:4 | 40m / 131ft |
For 4K@60Hz, keep the CAT6 run within 40m / 131ft.
For 1080p@60Hz, the extender can reach up to 70m / 230ft.
IMPORTANT — Use Direct CAT5e / CAT6 Cable Connection
The EX230UHD should be connected directly from the Transmitter HDBaseT OUT to the Receiver HDBaseT IN.
Do not connect the CAT cable through:
- Network switch
- Router
- Internet network
- LAN switch
- Standard Ethernet port
- Patch equipment that changes wiring format
This product uses CAT cable for HDBaseT signal transmission. It is not an AV-over-IP extender.
IMPORTANT — Use Direct Interconnection Wiring
The manual cautions that the extender uses UTP termination following the standard direct interconnection method.
The page 3 diagram shows the direct interconnection method using T568B on both ends of the cable. It also shows a cross interconnection method and notes that the extender will automatically start protection mode when cross interconnection termination is used.
For best results, terminate both ends of the CAT cable using the same standard, preferably T568B to T568B.
IMPORTANT — POC Is Supported
The EX230UHD supports POC, or Power Over Cable.
Only one side needs the included 24V/1A power supply.
| Power Setup | Support |
| Power Transmitter only | Supported |
| Power Receiver only | Supported |
| Power both units | Not required |
| POC power consumption | Less than 10W |
The manual’s POC diagram shows that the power adapter can be connected to either the Transmitter or the Receiver, and the other unit receives power through the CAT cable.
IMPORTANT — Bidirectional IR Control Is Supported
The EX230UHD supports bidirectional infrared control together with the HDMI signal.
This allows IR control in both directions:
| Direction | Use Case |
| Receiver side to Transmitter side | Control the HDMI source from the display side |
| Transmitter side to Receiver side | Control the display from the source side |
Typical source-control setup:
- Connect Wideband IR Rx to IR IN on the Receiver.
- Place the IR Receiver near the display side where the source remote will be used.
- Connect Wideband IR Tx to IR OUT on the Transmitter.
- Place the IR Transmitter near the HDMI source device’s IR window.
Typical display-control setup:
- Connect Wideband IR Rx to IR IN on the Transmitter.
- Connect Wideband IR Tx to IR OUT on the Receiver.
- Place the IR Transmitter near the display’s IR window.
IMPORTANT — Bidirectional RS-232 Is Supported
The EX230UHD supports bidirectional RS-232 control together with the HDMI signal.
RS-232 can be used for:
- Display control
- Projector control
- HDMI matrix control
- Control processor integration
- PC control systems
- Serial command pass-through
The connection diagram on pages 9 and 10 shows RS-232 cables connected between a PC or RS-232 equipped HDMI matrix and the Transmitter / Receiver system.
IMPORTANT — HDMI Audio Pass-Through Is Supported
The EX230UHD supports HDMI High Bit Rate audio pass-through.
Supported HDMI audio formats include:
- LPCM 2CH
- LPCM 5.1CH
- LPCM 7.1CH
- Dolby Digital
- DTS 5.1
- Dolby Digital+
- Dolby TrueHD
- DTS-HD Master Audio
- Dolby Atmos
- DTS:X
The connected HDMI source, display, AVR, soundbar, or audio system must also support the selected audio format.
IMPORTANT — No HDMI Loop Out Listed
The EX230UHD manual lists HDMI IN on the Transmitter and HDMI OUT on the Receiver.
It does not list HDMI loop out on the Transmitter.
| Unit | HDMI Port |
| Transmitter | HDMI IN |
| Receiver | HDMI OUT |
If a local display is needed near the source, use an HDMI splitter before the Transmitter or choose a model with HDMI loop out.
Ports and Panel Layout
| Port / Indicator | Unit | Function |
| POWER LED | Transmitter | System power indicator |
| DC 24V | Transmitter | Connect 24V/1A power adapter if powering from Transmitter side |
| HDBaseT OUT | Transmitter | Connect CAT cable to Receiver HDBaseT IN |
| HDMI IN | Transmitter | Connect HDMI source device |
| IR IN | Transmitter | Connect Wideband IR Rx |
| IR OUT | Transmitter | Connect Wideband IR Tx |
| RS-232 | Transmitter | Phoenix jack for serial control pass-through |
| SERVICE | Transmitter | Manufacturer use only |
| Connection Signal Indicator | Transmitter | Shows HDBaseT link status |
| Data Signal Indicator | Transmitter | Shows HDMI / HDCP signal status |
| POWER LED | Receiver | System power indicator |
| DC 24V | Receiver | Connect 24V/1A power adapter if powering from Receiver side |
| HDBaseT IN | Receiver | Connect CAT cable from Transmitter HDBaseT OUT |
| HDMI OUT | Receiver | Connect HDMI display |
| IR IN | Receiver | Connect Wideband IR Rx |
| IR OUT | Receiver | Connect Wideband IR Tx |
| RS-232 | Receiver | Phoenix jack for serial control pass-through |
| SERVICE | Receiver | Manufacturer use only |
| Connection Signal Indicator | Receiver | Shows HDBaseT link status |
| Data Signal Indicator | Receiver | Shows HDMI / HDCP signal status |
Step-by-Step Setup
- Connect the HDMI source device to HDMI IN on the Transmitter.
Examples include a Blu-ray player, DVD player, cable box, satellite receiver, streaming device, media player, PS4, laptop, desktop PC, DVR, or NVR. - Connect HDBaseT OUT on the Transmitter to HDBaseT IN on the Receiver using CAT5e / CAT6 cable.
- Connect HDMI OUT on the Receiver to the HDMI input on the TV, monitor, or projector.
- Connect the included 24V/1A power adapter to either the Transmitter or Receiver.
- If using source control from the display side, connect IR Rx to the Receiver IR IN and IR Tx to the Transmitter IR OUT.
- If using display control from the source side, connect IR Rx to the Transmitter IR IN and IR Tx to the Receiver IR OUT.
- If using RS-232, connect Phoenix RS-232 cables to the Transmitter and Receiver RS-232 ports.
- Power on the HDMI source, display, Transmitter, Receiver, and any connected control devices.
- Check the POWER LEDs.
- Check the Connection Signal Indicator and Data Signal Indicator.
- Test video, audio, IR control, RS-232 control, and CEC bypass if needed.
CAT Cable Requirement — Critical
Use high-quality CAT5e / CAT6 cable.
| Resolution / Signal | Recommended Maximum Distance |
| 1080p@60Hz 36-bit | Up to 70m / 230ft over CAT6 |
| 4K@60Hz | Up to 40m / 131ft over CAT6 |
Poor CAT cable may cause:
- No video
- Flickering
- Black screen
- Poor connection signal indicator status
- HDBaseT link failure
- Audio dropouts
- IR control issues
- RS-232 issues
- 4K@60Hz not working
- Protection mode from incorrect termination
Use a direct, properly terminated CAT cable.
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
- Audio dropouts
- HDCP handshake issues
- No HDMI signal detection
For troubleshooting, test the HDMI source directly with the display before using the extender.
Power Requirement — Critical
The EX230UHD uses one DC 24V/1A power adapter.
| Unit | Power Requirement |
| Transmitter | DC 24V/1A, or powered through POC |
| Receiver | DC 24V/1A, or powered through POC |
| Power Detail | Value |
| Power adapter input | AC 100–240V 50/60Hz |
| Power adapter output | DC 24V/1A |
| Maximum power consumption | 24W |
| POC power consumption | Less than 10W |
Only one side normally needs power because POC powers the other unit through the CAT cable.
Understanding the Transmitter
The Transmitter is installed near the HDMI source.
It has:
- HDMI IN
- HDBaseT OUT
- IR IN and IR OUT
- RS-232
- SERVICE port
- DC 24V input
- POWER LED
- Connection Signal Indicator
- Data Signal Indicator
The Transmitter converts the HDMI signal to an HDBaseT signal and sends it over CAT cable to the Receiver.
Understanding the Receiver
The Receiver is installed near the remote HDMI display.
It has:
- HDBaseT IN
- HDMI OUT
- IR IN and IR OUT
- RS-232
- SERVICE port
- DC 24V input
- POWER LED
- Connection Signal Indicator
- Data Signal Indicator
The Receiver converts the HDBaseT signal back to HDMI for the display.
Understanding POC
POC allows one power adapter to power both units through the CAT cable.
The power adapter can connect to either the Transmitter or Receiver.
This reduces the need for an outlet at both ends of the installation.
Understanding Bidirectional IR
Bidirectional IR allows remote control signals to move in both directions.
Use the IR Receiver where the remote control will be pointed.
Use the IR Transmitter near the device being controlled.
The included IR cables allow control of a source from the display side or control of a display from the source side.
Understanding RS-232 Control
RS-232 pass-through lets serial commands travel between the Transmitter and Receiver.
This is useful for professional AV control systems, projectors, displays, or RS-232 equipped HDMI matrix systems.
The page 10 connection diagram shows a notebook, DVD or Blu-ray player, TV or monitor, and RS-232 equipped HDMI matrix connected through the Transmitter and Receiver system.
Understanding Signal Indicators
| Indicator | Status | Meaning |
| Connection Signal Indicator Illuminated | Transmitter and Receiver are in good connection status | |
| Connection Signal Indicator Flashing | Transmitter and Receiver are in poor connection status | |
| Connection Signal Indicator Dark | Transmitter and Receiver are not connected | |
| Data Signal Indicator Illuminated | HDMI signal with HDCP | |
| Data Signal Indicator Flashing | HDMI signal without HDCP | |
| Data Signal Indicator Dark | No HDMI signal |
Use these indicators first when troubleshooting CAT cable, HDBaseT link, HDMI source, and HDCP status.
Supported Video and Audio
The EX230UHD supports video formats including:
| Supported Video |
| 4K2K@50/60Hz YUV 4:4:4 |
| 4K2K@30Hz |
| 1080p@120Hz |
| 1080p 3D@60Hz |
| RGB |
| YCbCr 4:4:4 |
| YCbCr 4:2:2 |
| 10-bit color |
| 12-bit color |
| 10-bit HDR pass-through |
Supported HDMI audio formats include:
| Supported HDMI Audio |
| LPCM 2CH |
| LPCM 5.1CH |
| LPCM 7.1CH |
| Dolby Digital |
| DTS 5.1 |
| Dolby Digital+ |
| Dolby TrueHD |
| DTS-HD Master Audio |
| Dolby Atmos |
| DTS:X |
Supported Technical Specifications
| Specification | Support |
| Product Type | 18Gbps HDMI over CAT5e / CAT6 HDBaseT extender |
| HDMI Version | HDMI 2.0b |
| HDCP Version | HDCP 2.2 / 1.4 |
| DVI Compliance | Supported |
| Video Bandwidth | 18Gbps |
| Maximum Resolution | 4K2K@50/60Hz YUV 4:4:4 |
| HDR | 10-bit HDR pass-through |
| Audio | HDMI HBR audio pass-through |
| CEC | Bypass supported |
| IR | Bidirectional IR |
| RS-232 | Bidirectional RS-232 |
| POC | Supported |
| CAT Cable | CAT5e / CAT6 |
| 1080p Distance | Up to 70m / 230ft over CAT6 |
| 4K Distance | Up to 40m / 131ft over CAT6 |
| Transmitter Input | HDMI IN, IR IN, RS-232, SERVICE |
| Transmitter Output | HDBaseT OUT, IR OUT |
| Receiver Input | HDBaseT IN, IR IN, RS-232, SERVICE |
| Receiver Output | HDMI OUT, IR OUT |
| Power Supply | DC 24V/1A |
| Power Adapter Input | AC 100–240V 50/60Hz |
| Power Consumption | 24W max |
| POC Power Consumption | Less than 10W |
| Housing | Metal enclosure |
| Color | Black |
| Dimensions | 157mm x 90mm x 20mm |
| Weight | 333g |
| Operating Temperature | 0°C to 40°C / 32°F to 104°F |
| Storage Temperature | -20°C to 60°C / -4°F to 140°F |
| Relative Humidity | 20–90% RH, non-condensing |
| ESD Protection | ±8kV air-gap, ±4kV contact |
What Source Devices Is the EX230UHD Compatible With?
The EX230UHD is compatible with HDMI source devices such as:
- Blu-ray players
- DVD players
- Cable boxes
- Satellite receivers
- Streaming devices
- Media players
- PS4
- Desktop PCs
- Laptops with HDMI output
- DVRs
- NVRs
- HDMI matrix outputs
- HDMI switch outputs
The source must output a supported HDMI resolution.
What Displays Is the EX230UHD Compatible With?
The EX230UHD can connect to HDMI displays such as:
- 4K TVs
- 1080p TVs
- Monitors
- Projectors
- HDTVs
- Commercial displays
- Conference room displays
- Classroom displays
- Digital signage displays
- Control room displays
For 4K@60Hz, the display must support 4K@60Hz input.
Frequently Asked Questions
Q: What is the OREI EX230UHD used for?
A: The EX230UHD is used to extend an HDMI signal over CAT5e / CAT6 cable using HDBaseT technology.
Q: Does the EX230UHD support 4K@60Hz?
A: Yes. It supports up to 4K2K@50/60Hz YUV 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 1.4.
Q: What video bandwidth does it support?
A: It supports 18Gbps video bandwidth.
Q: Does it support HDR?
A: Yes. It supports 10-bit HDR pass-through.
Q: Does it support CEC?
A: Yes. CEC bypass is supported.
Q: How far can it extend HDMI?
A: It can extend 1080p@60Hz up to 230ft / 70m over CAT6 cable. For 4K@60Hz, the listed distance is 40m / 131ft over CAT6.
Q: What CAT cable should I use?
A: Use CAT5e or CAT6 cable. CAT6 is recommended for maximum distance and 4K signals.
Q: Can I connect it through a network switch?
A: No. Connect the Transmitter and Receiver directly with CAT5e / CAT6 cable.
Q: Is this AV over IP?
A: No. It is an HDBaseT HDMI extender.
Q: Does it support POC?
A: Yes. It supports Power Over Cable.
Q: Do both units need power adapters?
A: No. Only one side needs the included 24V/1A power adapter because POC powers the other unit through the CAT cable.
Q: Can the power adapter connect to either Transmitter or Receiver?
A: Yes. The manual’s POC diagram shows power can be connected on either side.
Q: Does it support IR control?
A: Yes. It supports bidirectional IR control.
Q: Does it support RS-232?
A: Yes. It supports bidirectional RS-232 control.
Q: Does the Transmitter have HDMI loop out?
A: No. HDMI loop out is not listed in the manual.
Q: What audio formats are supported?
A: It supports LPCM 2/5.1/7.1CH, Dolby Digital, DTS 5.1, Dolby Digital+, Dolby TrueHD, DTS-HD Master Audio, Dolby Atmos, and DTS:X.
Q: Does it support Dolby Atmos?
A: Yes. Dolby Atmos is listed as supported through HDMI audio pass-through.
Q: Does it support DTS:X?
A: Yes. DTS:X is listed as supported.
Q: What should I do if there is no video?
A: Check power, HDMI source, HDMI cables, CAT cable, source resolution, display input, and the Connection Signal and Data Signal indicators.
Q: What should I do if the Connection Signal Indicator is flashing?
A: The Transmitter and Receiver are in poor connection status. Check CAT cable quality, terminations, length, and direct wiring.
Q: What should I do if the Connection Signal Indicator is dark?
A: The Transmitter and Receiver are not connected. Check the CAT cable and confirm HDBaseT OUT is connected to HDBaseT IN.
Q: What should I do if the Data Signal Indicator is dark?
A: No HDMI signal is detected. Check the HDMI source, HDMI cable, and source output setting.
Q: What should I do if the Data Signal Indicator is flashing?
A: The HDMI signal is detected without HDCP. Check the source, display, and HDCP compatibility.
Q: What should I do if 4K@60Hz does not work?
A: Use high-quality HDMI cables, CAT6 cable within 40m / 131ft, confirm the source and display support 4K@60Hz, and test with a lower resolution first.
Q: What should I do if the extender enters protection mode?
A: Check the CAT cable termination. The manual notes that cross interconnection termination can start protection mode. Use direct interconnection wiring, such as T568B on both ends.
Q: What should I do if IR control does not work?
A: Confirm that the Wideband IR Rx and IR Tx cables are connected in the correct direction and that the IR Tx is placed near the controlled device’s IR sensor.
Q: What should I do if RS-232 does not work?
A: Check the Phoenix connector wiring, serial control connection, and whether the correct source-side and display-side RS-232 devices are connected.
Q: Does the EX230UHD need external power?
A: Yes. Connect the included 24V/1A power adapter to either the Transmitter or the Receiver. The other unit can be powered through POC.
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