What Is the UHD-201MV?
The OREI UHD-201MV is a 4K60 2x1 Multiviewer Seamless UHD Video Switcher designed to display two HDMI sources on one UHD or HD display.
It supports HDMI 2.0b, HDCP 2.2 / 1.x, and video resolutions up to 4K@60Hz 4:4:4 with 18Gbps video bandwidth. The unit can switch between two HDMI inputs or combine both HDMI sources on a single screen using Single, PIP, PBP 1, and PBP 2 display modes.
The UHD-201MV also supports seamless switching, advanced EDID management, audio de-embedding through RCA analog and optical audio outputs, independent audio selection, volume control for LPCM audio, IR remote control, RS-232 command control, and front-panel button control.
The UHD-201MV is useful for conference rooms, control rooms, classrooms, production monitoring, gaming setups, live streaming setups, security monitoring, commercial AV systems, and any installation where two HDMI sources need to be switched or displayed together on one 4K display.
IMPORTANT — UHD-201MV Is a 2x1 HDMI Multiviewer Switch
The UHD-201MV combines two HDMI sources into one HDMI output.
| Function | Support |
| 2 HDMI inputs | Supported |
| 1 HDMI output | Supported |
| Single source switching | Supported |
| PIP display | Supported |
| PBP display | Supported |
| Seamless switching | Supported |
| Audio de-embedding | Supported |
| HDMI matrix with independent outputs | Not supported |
This product is a 2-input, 1-output multiviewer and seamless switcher.
It is not a full HDMI matrix and does not provide multiple independent HDMI outputs.
IMPORTANT — Supports up to 4K@60Hz 4:4:4
The UHD-201MV supports full 4K60 video.
| Video Feature | Support |
| Maximum input resolution | Up to 4K@60Hz 4:4:4 |
| Maximum output resolution | Up to 4K@60Hz |
| HDMI version | HDMI 2.0b |
| HDCP support | HDCP 2.2 / 1.x |
| Video bandwidth | 18Gbps |
| Color depth | 8-bit |
| Color space | RGB, YCbCr 4:4:4, YCbCr 4:2:2, YCbCr 4:2:0 |
To get 4K@60Hz 4:4:4, the HDMI source, display, HDMI cables, and output resolution settings must all support 4K60.
IMPORTANT — Four Display Modes Are Supported
The UHD-201MV supports four main multiview display modes.
| Display Mode | Description |
| Single | One HDMI input displayed full screen |
| PIP | Picture-in-picture display |
| PBP 1 | Picture-by-picture display layout 1 |
| PBP 2 | Picture-by-picture display layout 2 |
Use the Multiview button on the front panel, the IR remote, or RS-232 commands to select the display mode.
IMPORTANT — Single Mode Is Used for Seamless Source Switching
In Single mode, the UHD-201MV works like a 2x1 HDMI seamless switcher.
| Single Mode Function | Support |
| HDMI 1 full-screen output | Supported |
| HDMI 2 full-screen output | Supported |
| Seamless switching | Supported |
| Front-panel input button | Supported |
| Remote input buttons | Supported |
| RS-232 input routing | Supported |
Use Single mode when you want to switch between two sources on one display.
The front-panel INPUT button is only available in Single screen display mode.
IMPORTANT — PIP Mode Supports Window Size and Position Control
PIP mode displays one source as the main image and the second source as a smaller sub-window.
| PIP Feature | Support |
| Picture-in-picture | Supported |
| WIN1 source selection | Supported |
| WIN2 source selection | Supported |
| Sub-window position | Supported |
| Sub-window size | Supported |
| IR remote control | Supported |
| RS-232 control | Supported |
PIP position options include:
| PIP Position |
| Left top |
| Left bottom |
| Right top |
| Right bottom |
PIP size options include:
| PIP Size |
| Small |
| Middle |
| Large |
Use PIP mode when one source should be shown large and the second source should be monitored in a smaller window.
IMPORTANT — PBP Modes Support Side-by-Side Display
The UHD-201MV supports two PBP layouts.
| PBP Feature | Support |
| PBP 1 | Supported |
| PBP 2 | Supported |
| Input selection for each window | Supported |
| Aspect ratio selection | Supported |
| 16:9 aspect option | Supported |
| Full screen aspect option | Supported |
In PBP 1 and PBP 2 modes, both HDMI sources can be displayed on the same screen.
Use PBP mode when both sources need to be viewed at the same time.
IMPORTANT — HDMI Audio Pass-Through Supports up to 7.1 Channels
The UHD-201MV supports multiple HDMI audio formats.
| HDMI Audio Format | Support |
| PCM 2.0 | Supported |
| PCM 5.1 | Supported |
| PCM 7.1 | Supported |
| Dolby Digital | Supported |
| Dolby Digital Plus | Supported |
| DTS | Supported |
| DTS-HD High Resolution | Supported |
| HBR audio | Not supported |
The manual notes that HBR audio is not supported.
IMPORTANT — RCA and Optical Audio De-Embedding Are Supported
The UHD-201MV includes both analog and optical audio outputs.
| Audio Output | Supported Format |
| RCA L/R output | PCM 2.0 |
| Optical SPDIF output | Dolby Digital, DTS 5.1, PCM 2.0 |
Use RCA output for analog stereo audio.
Use optical output for compatible digital audio systems.
For best analog audio compatibility, set the HDMI source to PCM 2.0 or Stereo.
IMPORTANT — Volume Control Works for LPCM Audio
The UHD-201MV supports audio volume control through the IR remote and RS-232 commands.
| Audio Control | Support |
| Volume up | Supported |
| Volume down | Supported |
| Set volume 0–100 | Supported through RS-232 |
| Mute / unmute | Supported |
| Independent audio selection | Supported |
| Volume control for LPCM | Supported |
The manual states that users can control the volume of audio in LPCM format.
For Dolby or DTS audio, volume control may need to be handled by the connected AVR, amplifier, or display.
IMPORTANT — Independent Audio Selection Is Supported
The UHD-201MV allows audio source selection.
| Audio Source Option | Function |
| Follow window 1 selected source | Audio follows WIN1 |
| HDMI 1 input audio | Uses HDMI 1 audio |
| HDMI 2 input audio | Uses HDMI 2 audio |
This is useful in PIP or PBP modes when both video sources are visible but only one source should provide audio.
IMPORTANT — Advanced EDID Management Is Supported
The UHD-201MV supports 18 EDID modes through RS-232 command or OSD menu navigation.
| EDID No. | EDID Mode |
| 1 | 4K60-2.0CH |
| 2 | 4K60-5.1CH |
| 3 | 4K60-7.1CH |
| 4 | 4K30-2.0CH |
| 5 | 4K30-5.1CH |
| 6 | 4K30-7.1CH |
| 7 | 1080P-2.0CH |
| 8 | 1080P-5.1CH |
| 9 | 1080P-7.1CH |
| 10 | 1920x1200-2.0CH |
| 11 | 1680x1050-2.0CH |
| 12 | 1600x1200-2.0CH |
| 13 | 1440x900-2.0CH |
| 14 | 1360x768-2.0CH |
| 15 | 1280x1024-2.0CH |
| 16 | 1024x768-2.0CH |
| 17 | 720P-2.0CH |
| 18 | AUTO / Copy from HDMI output |
Use EDID settings when the source outputs the wrong resolution, there is no picture, or audio format compatibility needs to be controlled.
IMPORTANT — Multiple Output Resolutions Are Supported
The UHD-201MV includes a scaling engine and supports many output resolutions.
| No. | Output Resolution |
| 1 | 4096x2160p60 |
| 2 | 4096x2160p50 |
| 3 | 3840x2160p60 |
| 4 | 3840x2160p50 |
| 5 | 3840x2160p30 |
| 6 | 3840x2160p25 |
| 7 | 1920x1200p60 RB |
| 8 | 1920x1080p60 |
| 9 | 1920x1080p50 |
| 10 | 1360x768p60 |
| 11 | 1280x800p60 |
| 12 | 1280x720p60 |
| 13 | 1280x720p50 |
| 14 | 1024x768p60 |
Use the RES button on the front panel, the resolution buttons on the remote, or RS-232 commands to select the output resolution.
Long press the RES button for 3 seconds to switch the output resolution to 720p60.
IMPORTANT — IR Remote and IR Extension Are Supported
The UHD-201MV includes an IR remote and an IR extension port.
| IR Feature | Support |
| IR remote control | Supported |
| IR EXT port | Supported |
| Included 38kHz IR receiver cable | Supported |
| IR level | 5Vp-p |
| IR frequency | 38kHz |
Use the IR EXT port when the unit is installed inside a rack, cabinet, or closed area where the front IR window is blocked.
IMPORTANT — RS-232 Command Control Is Supported
The UHD-201MV supports RS-232 command control using a 3-pin Phoenix connector.
| RS-232 Feature | Support |
| Power control | Supported |
| Reboot / reset | Supported |
| Output resolution control | Supported |
| Output HDCP setting | Supported |
| EDID setting | Supported |
| Audio source selection | Supported |
| Volume control | Supported |
| Mute control | Supported |
| Input routing | Supported |
| Multiview mode selection | Supported |
| PIP position and size | Supported |
| PBP mode and aspect ratio | Supported |
Serial settings:
| RS-232 Setting | Value |
| Baud rate | 115200 default |
| Data bits | 8 |
| Stop bits | 1 |
| Check bit | 0 |
The IR remote can also open the OSD menu and change the serial port baud rate between 115200, 57600, 38400, 19200, and 9600.
Ports and Panel Layout
Front Panel
| Port / Button / Indicator | Function |
| Power button | Short press to power on; long press for 1 second to enter standby |
| POWER LED | Green when powered on; red when in standby |
| IN 1 / IN 2 LEDs | Show active input signal status and selected input behavior |
| IR window | Receives IR remote signal |
| INPUT button | Switches input source in Single mode |
| Multiview button | Cycles through Single, PIP, PBP 1, and PBP 2 |
| Multiview long press | Selects aspect ratio for PBP 1 / PBP 2 |
| RES button | Cycles HDMI output resolution |
| RES long press | Sets output resolution to 720p60 |
Rear Panel
| Port | Function |
| L/R output | RCA analog PCM 2.0 audio output |
| OPTICAL output | SPDIF optical audio output |
| HDMI OUTPUT | Connect HDMI display such as TV or monitor |
| HDMI IN 1 | Connect HDMI source 1 |
| HDMI IN 2 | Connect HDMI source 2 |
| RS-232 | Connect PC or control system for serial control |
| IR EXT | Connect included 38kHz IR receiver cable |
| DC 12V | Connect included DC 12V/1A locking power adapter |
Remote Control Functions
| Remote Function | Description |
| Baud | Opens OSD menu and cycles RS-232 baud rate |
| Power | Powers on the device or puts it into standby |
| Single / PIP / PBP buttons | Select display mode |
| WIN1 HD1 / HD2 / cycle | Selects input source for WIN1 |
| WIN2 HD1 / HD2 / cycle | Selects input source for WIN2 in PIP / PBP modes |
| POS | Changes PIP sub-window position |
| SIZE | Changes PIP sub-window size |
| 16:9 | Switches PBP aspect ratio between 16:9 and FULL |
| Mute | Mutes or unmutes audio output |
| VOL- / VOL+ | Decreases or increases audio output volume |
| 4K / 1080P / 720P / XGA | Selects output resolution |
| 4K2.0 / 4K5.1 / 2K2.0 / COPY | Selects EDID mode |
Step-by-Step Setup
- Place the UHD-201MV near the HDMI sources and display.
- Connect HDMI source 1 to HDMI IN 1.
- Connect HDMI source 2 to HDMI IN 2.
Examples include PCs, laptops, media players, gaming consoles, cameras, DVD players, Blu-ray players, streaming devices, cable boxes, and HDMI matrix outputs.
- Connect the HDMI OUTPUT to a TV, monitor, projector, or display.
- If using analog audio output, connect the RCA L/R output to an amplifier, speakers, or audio system.
- If using optical audio output, connect OPTICAL output to an AVR, soundbar, amplifier, or audio processor.
- If the unit is mounted in a cabinet or rack, connect the included IR receiver cable to the IR EXT port.
- If RS-232 control is required, connect the RS-232 Phoenix connector to a PC or control system.
- Connect the included DC 12V/1A locking power adapter.
- Power on the display and HDMI sources.
- Select the desired EDID mode using the remote, OSD, or RS-232 commands.
- Select the desired output resolution using the RES button, remote, or RS-232 command.
- Choose Single, PIP, PBP 1, or PBP 2 mode.
- Assign HDMI sources to WIN1 and WIN2 as needed.
- Select audio source, volume, and mute settings as needed.
- Test video, audio, switching, PIP / PBP layouts, IR remote, and RS-232 control.
HDMI Cable Requirement — Critical
Use high-quality HDMI cables capable of 18Gbps for 4K60 operation.
| HDMI Requirement | Specification |
| HDMI version | HDMI 2.0b |
| Video bandwidth | 18Gbps |
| Maximum resolution | 4K@60Hz 4:4:4 |
| HDCP support | HDCP 2.2 / 1.x |
Poor HDMI cables may cause:
- No picture
- Flickering
- Black screen
- Wrong resolution
- 4K60 failure
- HDCP handshake problems
- Audio dropouts
- Source not detected
- Multiview windows not displaying correctly
For troubleshooting, test each HDMI source directly with the display before using the UHD-201MV.
Audio Requirement — Critical
Use the correct audio format based on the output you are using.
| Output | Supported Audio |
| HDMI OUT | PCM 2.0 / 5.1 / 7.1, Dolby Digital / Plus, DTS, DTS-HD High Res |
| RCA L/R output | PCM 2.0 |
| OPTICAL output | Dolby Digital, DTS 5.1, PCM 2.0 |
| HBR audio | Not supported |
If analog RCA audio does not work, set the HDMI source to PCM 2.0 or Stereo.
If optical audio does not work, set the source to PCM 2.0, Dolby Digital, or DTS 5.1.
If volume control does not affect the audio, use LPCM audio or control volume from the connected AVR, amplifier, or display.
EDID Requirement — Critical
Use EDID settings to control source resolution and audio output behavior.
Try changing EDID if:
- There is no output.
- The source outputs the wrong resolution.
- The display does not support the selected format.
- The source is sending audio that the output device cannot decode.
- A 4K60 source does not display.
- You need 2.0, 5.1, or 7.1 audio control.
For most 4K60 displays, use 4K60-2.0CH, 4K60-5.1CH, or 4K60-7.1CH.
For 1080p displays, use a 1080p EDID setting.
For compatibility testing, use AUTO / Copy from HDMI output.
Power Requirement — Critical
The UHD-201MV requires the included DC 12V/1A locking power adapter.
| Power Detail | Specification |
| Power adapter input | AC 100–240V, 50/60Hz |
| Power adapter output | DC 12V/1A |
| Power consumption | 4.56W max |
If the unit does not power on:
- Check the DC 12V power adapter.
- Confirm the outlet is working.
- Check whether the POWER LED is green or red.
- Try power cycling the unit.
Surge protection is recommended.
RS-232 Setup Requirement — Critical
Use the RS-232 Phoenix connector for serial command control.
| Serial Setting | Value |
| Baud rate | 115200 default |
| Data bits | 8 |
| Stop bits | 1 |
| Check bit | 0 |
Example RS-232 commands include:
| Command | Function |
| help! | Lists all commands |
| r type! | Gets device model |
| r fw version! | Gets firmware version |
| power 1! | Powers on the device |
| power 0! | Powers off the device |
| reboot! | Reboots the device |
| reset! | Resets to factory defaults |
| s output res 3! | Sets output resolution to 3840x2160p60 |
| s output hdcp 2! | Sets output HDCP |
| s input EDID 1! | Sets input EDID to 4K60 4:4:4 Stereo Audio 2.0 |
| s output audio 1! | Selects HDMI 1 input audio |
| s output audio vol 30! | Sets audio volume to 30 |
| s output audio mute 1! | Mutes output audio |
| s in source 1! | Routes HDMI 1 to output |
| s multiview 2! | Selects PIP mode |
| s PIP position 3! | Sets PIP to right top |
| s PIP size 3! | Sets PIP size to large |
Use RS-232 only if the installation requires control from a PC or third-party control system.
OSD Menu Navigation
The IR remote can be used for OSD menu navigation.
| OSD Control | Function | Default | Options |
| Baud | Baud rate | 115200 | 115200, 57600, 38400, 19200, 9600 |
| Mute | Audio mute | OFF | ON / OFF |
| VOL- / VOL+ | Audio volume | 100 | 0–100 |
Use the Baud button to open the OSD menu and cycle serial port baud rate options.
Use Mute, VOL-, and VOL+ to control audio mute and volume.
Display Mode Details
| Display Mode | Description | Available Controls |
| Single | One input shown full screen | Input selection |
| PIP | One main window with one sub-window | Input selection, sub-window size, sub-window position |
| PBP 1 | Two-window picture-by-picture layout | Input selection, display mode, aspect selection |
| PBP 2 | Alternate two-window picture-by-picture layout | Input selection, display mode, aspect selection |
In Single mode, use the INPUT button, remote WIN1 buttons, or RS-232 command to select HDMI 1 or HDMI 2.
In PIP and PBP modes, use WIN1 and WIN2 controls to assign HDMI 1 or HDMI 2 to each window.
Understanding the Application Example
The application example in the manual shows the UHD-201MV being used as a 2-input 1-output multiviewer. HDMI sources connect to HDMI IN 1 and HDMI IN 2, the HDMI output connects to a display, and the audio outputs can connect to external audio equipment.
This shows the main use case: two HDMI sources are switched or displayed together on one UHD monitor while audio can be de-embedded through RCA analog or optical output.
Supported Technical Specifications
| Specification | Support |
| Product Type | 4K60 2x1 Multiviewer Seamless UHD Video Switcher |
| Model | UHD-201MV |
| HDMI Compliance | HDMI 2.0b |
| HDCP Compliance | HDCP 2.2 / 1.x |
| Video Bandwidth | 18Gbps |
| Maximum Video Resolution | Up to 4K2K@60Hz 4:4:4 |
| Color Depth | 8-bit |
| Color Space | RGB, YCbCr 4:4:4, YCbCr 4:2:2, YCbCr 4:2:0 |
| HDMI Audio Formats | PCM 2.0 / 5.1 / 7.1CH, Dolby Digital / Plus, DTS, DTS-HD High Res |
| Analog Audio Output | PCM 2.0 |
| Optical Audio Output | Dolby Digital, DTS 5.1, PCM 2.0 |
| HBR Audio | Not supported |
| HDMI Inputs | 2 x HDMI IN, Type-A 19-pin female |
| HDMI Output | 1 x HDMI OUT, Type-A 19-pin female |
| Analog Audio Output | 1 x L/R RCA output |
| Optical Audio Output | 1 x SPDIF optical output |
| RS-232 | 1 x 3-pin 3.81mm Phoenix connector |
| IR EXT | 1 x 3.5mm stereo mini-jack |
| IR Level | 5Vp-p |
| IR Frequency | 38kHz |
| Power Supply | DC 12V/1A locking power adapter |
| Power Adapter Input | AC 100–240V, 50/60Hz |
| Power Consumption | 4.56W max |
| Housing | Metal enclosure |
| Color | Black |
| Dimensions | 175mm x 100mm x 30mm |
| Weight | 497g |
| 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 discharge, ±4kV contact discharge |
Package Contents
| Item | Quantity |
| 4K60 2x1 Multiviewer Seamless UHD Video Switcher | 1 |
| IR Remote | 1 |
| 3-pin 3.81mm Phoenix Connector, Male | 1 |
| 38kHz IR Wideband Receiver Cable, 1.5m | 1 |
| Mounting Ear | 2 |
| Machine Screw, KM3*4 | 4 |
| 12V/1A Locking Power Adapter | 1 |
| User Manual | 1 |
What HDMI Source Devices Is the UHD-201MV Compatible With?
The UHD-201MV can connect to HDMI source devices such as:
- PCs
- Laptops
- Gaming consoles
- DVD players
- Blu-ray players
- Streaming devices
- Media players
- Cable boxes
- Satellite receivers
- Cameras with HDMI output
- DVRs
- NVRs
- HDMI switch outputs
- HDMI matrix outputs
For best performance, use sources set to 4K@60Hz or lower.
What Displays Is the UHD-201MV Compatible With?
The UHD-201MV can connect to display devices such as:
- 4K UHD TVs
- 4K monitors
- 1080p displays
- HDMI projectors
- Commercial displays
- Conference room displays
- Control room displays
- Production monitoring displays
- Gaming displays
The display must support the selected output resolution.
Frequently Asked Questions
Q: What is the UHD-201MV used for?
A: It is used to switch between two HDMI sources or display both sources together on one UHD or HD display.
Q: Is the UHD-201MV a 2x1 multiviewer?
A: Yes. It is a 4K60 2x1 Multiviewer Seamless UHD Video Switcher.
Q: How many HDMI inputs does it have?
A: It has two HDMI inputs.
Q: How many HDMI outputs does it have?
A: It has one HDMI output.
Q: Does it support 4K@60Hz?
A: Yes. It supports up to 4K2K@60Hz 4:4:4.
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 is the video bandwidth?
A: It supports 18Gbps video bandwidth.
Q: Does it support seamless switching?
A: Yes. It supports seamless switching between input channels.
Q: What display modes are supported?
A: Single, PIP, PBP 1, and PBP 2.
Q: Can it show both HDMI inputs at the same time?
A: Yes. Use PIP, PBP 1, or PBP 2 mode.
Q: Can it show one input full screen?
A: Yes. Use Single mode.
Q: Can I change PIP window position?
A: Yes. PIP position can be set to left top, left bottom, right top, or right bottom.
Q: Can I change PIP window size?
A: Yes. PIP size can be set to small, middle, or large.
Q: Can I change PBP aspect ratio?
A: Yes. PBP aspect can be set to full screen or 16:9.
Q: Does it support audio de-embedding?
A: Yes. It supports RCA analog audio output and optical SPDIF audio output.
Q: What audio does the RCA output support?
A: RCA analog audio supports PCM 2.0.
Q: What audio does the optical output support?
A: Optical supports Dolby Digital, DTS 5.1, and PCM 2.0.
Q: What HDMI audio formats are supported?
A: HDMI supports PCM 2.0 / 5.1 / 7.1CH, Dolby Digital / Plus, DTS, and DTS-HD High Res.
Q: Does it support HBR audio?
A: No. The manual states that HBR audio is not supported.
Q: Does it support volume control?
A: Yes. Volume control is supported for LPCM audio.
Q: Can I select which input audio is output?
A: Yes. Audio can follow window 1, HDMI 1, or HDMI 2.
Q: Does it support EDID management?
A: Yes. It supports 18 EDID modes through RS-232 command or OSD menu navigation.
Q: What should I do if there is no picture?
A: Check the HDMI cables, source resolution, selected output resolution, EDID setting, HDCP setting, display input, and power.
Q: What should I do if 4K60 does not work?
A: Use 18Gbps HDMI cables, confirm the display supports 4K60, set the correct EDID, and confirm the source is outputting 4K60 in a supported format.
Q: Does it support IR remote control?
A: Yes. An IR remote is included.
Q: What is the IR EXT port used for?
A: It connects the included 38kHz IR receiver cable when the unit is installed out of sight.
Q: Does it support RS-232 control?
A: Yes. RS-232 command control is supported.
Q: What RS-232 baud rate does it use?
A: The default baud rate is 115200, but it can also be set to 57600, 38400, 19200, or 9600.
Q: What power adapter does it use?
A: It uses the included DC 12V/1A locking power adapter.
Q: What is the power consumption?
A: The manual lists power consumption as 4.56W max.
Q: What should I do if there is no audio from RCA output?
A: Set the HDMI source audio to PCM 2.0 or Stereo, check the RCA cable, select the correct audio source, and confirm mute is off.
Q: What should I do if there is no audio from optical output?
A: Set the source to PCM 2.0, Dolby Digital, or DTS 5.1, check the optical cable, select the correct audio source, and confirm the connected audio device supports the selected format.
Q: What should I do if the remote does not work?
A: Point the remote at the IR window or connect the IR receiver cable to IR EXT. Replace the remote battery if needed.
Q: Does the UHD-201MV need external power?
A: Yes. Connect the included DC 12V/1A locking power adapter.
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