HDMI over CAT5 HDBaseT Extender - RS232 - IR - Ultra HD 4K - 330 ft (100m)
Extend an HDMI® video and audio over standard CAT5 cabling, with support for RS232 Serial and Infrared control
Product ID: ST121UTPHD2
- With HDBaseT extend HDMI, IR, and RS-232 through one CAT5e or CAT6 cable
- Astonishing picture quality with support for resolutions up to UltraHD 4K
- Hassle-free installation with a single CAT5e or CAT6 cable and built-in mounting hardware
The StarTech.com HDBaseT extender kit, extends HDMI up to 330 feet (100 Meters) over a single CAT5e or CAT6 cable. The extender supports Ultra HD and Full HD resolutions (4K / 1080p) with support for 3D and the accompanying 7.1 digital audio. For added versatility the transmitter and receiver can be used to transmit IR and RS232 serial communication over the same cable. The versatility of this video extender makes it an ideal solution for digital signage applications.
What is HDBaseT?
HDBaseT is a standardized, zero latency, video distribution technology that’s revolutionizing HDMI distribution. HDBaseT uses an advanced method of modulation that enables you to distribute uncompressed HDMI audio and video along with additional signals such as 100BaseT Ethernet, IR, RS-232 serial and power over cable.
Extend More with HDBaseT
The extender offers HDBaseT technology with HDMI, IR, and RS232 control in a single CAT 5 extender kit, for complete end-to-end control. Offering greater versatility than traditional HDMI extenders or HDMI cabling alone HDBaseT is the clear choice for every integrator and system designer. The IR extension enables you operate your display and an IR-enabled source device, such as a Blu-ray player or TV Set top box, from either end of your extension. While RS232 control let you to connect a serial I/O device at your display - an ideal solution for adding a serial touch screen interface to your remote display.
Astonishing Picture Quality from an Impressive Distance
With the A/V industry quickly adopting 4K as the new high-resolution video standard, long range video distribution can be a challenge with standard HDMI cables beginning signal degradation at 30 feet.
With support for 4K you’ll be amazed at how HDBaseT maintains your Ultra HD picture quality, four times the resolution of high-definition 1080p, even at 330 feet away from your video source. Plus, because the extender is still backward compatible with High-Definition 1080p displays and video sources, you can rest assured this extender will make your video source look great in any remote digital signage application.
Simplify Your Setup
This extender has been specially crafted for a smooth, tidy installation. HDBaseT technology allows for single cable installation, for seamless integration using existing CAT5e or CAT6 infrastructure, avoiding the hassle of running multiple cables, while reducing potential failure points. Mounting hardware is also built-in to both the extender and receiver for discrete, professional mounting.
The ST121UTPHD2 is backed by a 2-year StarTech.com warranty and free lifetime technical support.
- Position a display/monitor in a convenient viewing area while the transmitting content over a CAT5 cable from a cleaner, more secure environment
- Ideal for digital signage applications in financial, educational, medical and business sectors
- Perfect for video conferencing solutions in boardrooms and office settings
- Optimize placement of your demo stations at trade-shows and in auditoriums
The StarTech.com Advantage
- Integrated bi-directional RS232 and unidirectional IR interfaces enable you to communicate with, monitor and control your source audio-video device, from either end of the connection
- Support for 4K and full 1080p resolution with accompanying digital audio, which lets you display your content the way it's meant to be seen and heard
Ingram Micro España
|Cabling||Cat 5 UTP or better|
|Industry Standards||High Speed HDMI® and HDCP compliant|
|Audio Specifications||Supports Dolby® TrueHD, DTS-HD MA|
38Khz / ±10° / 5M
|Max Distance||100 m / 330 ft|
|Maximum Data Transfer Rate||HDMI® - 3.4Gbps
RS232 - 115200bps baud
|Maximum Digital Resolutions||4K|
|Supported Resolutions||3840x2160 (4K)
|Wide Screen Supported||Yes|
|Local Unit Connectors||1 - DB-9 (9 pin, D-Sub) Female|
|1 - IrDA (Infrared, SIR/FIR)|
|1 - RJ-45 Female|
|2 - HDMI (19 pin) Female|
|Remote Unit Connectors||1 - DB-9 (9 pin, D-Sub) Male|
|1 - HDMI (19 pin) Female|
|1 - RJ-45 Female|
|2 - IrDA (Infrared, SIR/FIR)|
|OS Compatibility||OS Independent|
|Special Notes / Requirements|
|System and Cable Requirements||1X Standard CAT5 cable 1X HDMI Cable for Remote Unit (Local Cable Included)|
|LED Indicators||1 - HDCP (Green)|
|1 - Mode (Green)|
|1 - Power (Green)|
|1 - RJ45 Link (Green)|
|Center Tip Polarity||Positive|
|Input Voltage||100 ~ 240 AC|
|Output Voltage||12 DC|
|Power Consumption (In Watts)||12|
|Power Source||2 AC Adapters Included|
|Operating Temperature||0°C to 70°C (32°F to 158°F)|
|Storage Temperature||-20°C to 85°C (-4°F to 185°F)|
|Product Height||2.5 cm [1 in]|
|Product Length||15 cm [5.9 in]|
|Product Width||80 mm [3.1 in]|
|Weight of Product||579 g [20.4 oz]|
|Package Height||67 mm [2.6 in]|
|Package Length||25.4 cm [10 in]|
|Package Width||30.9 cm [12.2 in]|
|Shipping (Package) Weight||1.5 kg [3.4 lb]|
|What's in the Box|
|Included in Package||1 - Local HDMI® Extender Unit|
|1 - Remote HDMI® Receiver Unit|
|1 - IR Receiver Cable|
|1 - IR Transmitter Cable|
|1 - HDMI Cable - 4 ft (1.2 Meters)|
|2 - Universal Power Adapter NA / UK / EU|
|1 - User Manual|
Replace your lost or failed power adapter
Replace your lost or failed power adapter
Connect an HDMI®-enabled output device to a DVI-D display, or a DVI-D output device to an HDMI-capable display
Frequently Asked Questions
Before You Buy
You should only use video converters and extenders if it is absolutely necessary to do so. In many cases, most video converters and extenders are not necessary if you purchase the correct cable.
The following table lists the maximum length of cable for common video standards.
|Video standard||Maximum length|
|DisplayPort||50 ft. (15.2m)|
|HDMI||50 ft. (15.2m)|
|DVI||50 ft. (15.2m)|
|VGA||200 ft. (71m)|
Note: StarTech.com offers cables longer than what is listed above, including active cables, which typically include built-in active signal boosters that allow for longer cables. Active cables are specifically designed to exceed the suggested maximum lengths and are tested at the listed specifications (for example, the maximum listed resolution).
Video adapters passively adapt a cable from one connector type to another. Video adapters do not change the signal type, or change the video standard.
Examples of common applications for adapters include the following:
DVI-I to VGA
RCA to BNC
Mini DisplayPort to DisplayPort
Couplers (female to female, or male to male)
Note: You can use a coupler to extend a cable for a short distance. However, each coupler that you use can introduce signal loss, which degrades the signal quality.
Video converters actively process and change the signal type from one video standard and convert it to another standard. They are typically used to convert digital to analog and vice versa, but can be used to convert a digital signal to another digital video standard (for example, HDMI to DisplayPort).
Video converters work over short distances from the source to the destination: up to 15 feet or 3 meters.
Video extenders convert an input signal to a higher voltage for transmission over longer distances and then convert the input signal back to the original video standard. The input and the output signal will match on a video extender, as the same video standard is maintained end-to-end. If a cable is extended with adapters or converters, the signal quality degrades.
Note: For more information on using a video adapter or converter with a video extender, see the following FAQ: http://www.startech.com/faq/video_signal_converters_convert_then_extend.
If you need to use a video extender with a video adapter or converter, you should position the adapter or converter as close to the video source as possible. For example, if you need to take a VGA signal from a computer and send it 200 feet to an HDMI® projector, you should convert the signal from VGA to HDMI and use an HDMI extender.
Note: For more information on when to use cables or extenders, see the following FAQ: http://www.startech.com/faq/video_signal_converters_when_to_convert.
Yes, this video extender works with set-top boxes, provided the set-top box meets the following requirements:
- The set-top box must be High-bandwidth Digital Content Protection (HDCP) compliant.
- The set-top box must support devices being connected between the video source and display. If the set-top box requires a direct cable connection between the video source and display, it won't work with this video extender.
No, this device is designed to be a point-to-point solution using networking cabling only.
This device outputs HDMI video signals. If you have a display or video destination that uses another type of video connection, there are ways that you can convert the video signal or connection. These options are outlined below and organized by the target connection.
When you consider whether to convert an HDMI video signal to another connection type, it is important to know if the media that is being converted from the HDMI video connection is protected by High-bandwidth Digital Content Protection (HDCP). If the media is protected by HDCP, you cannot convert to analog video connections because they do not support HDCP. You may experience this issue when you use devices like Blu-ray players, DVD players, and certain gaming consoles.
|VGA||HDMI to VGA: https://www.startech.com/AV/Converters/Video/?filter_AVINPUT=HDMI&filter_AVOUTPUT=VGA.|
|DisplayPort||HDMI to DisplayPort: https://www.startech.com/AV/Converters/Video/?filter_AVINPUT=HDMI&filter_AVOUTPUT=DisplayPort.|
This device has an HDMI input port. If you have a video source that uses another video connection, there are options available to convert the video signal or connection. These options will be outlined below for each video source connection.
DVI to HDMI video converters: https://www.startech.com/Cables/Audio-Video/Video-Adapter/HDMI-Cable-Adapters/.
DVI to HDMI video cables: https://www.startech.com/Cables/Audio-Video/HDMI/HDMI-to-DVI/.
DisplayPort to HDMI passive converters: https://www.startech.com/AV/Displayport-Converters/DP-HDMI/?filter_CONVERTTYPE=Passive.
DisplayPort to HDMI active converters: https://www.startech.com/AV/Displayport-Converters/DP-HDMI/?filter_CONVERTTYPE=Active.
DisplayPort Passive and Active Conversions
The converter that you require depends on the type of DisplayPort video source that you are using. For more information about converting DisplayPort video signals, refer to the following FAQ: https://www.startech.com/faq/DisplayPort_Converter_DP_Multi_Mode.
There are a few things you'll want to take care of before you deploy your new video extender in your setup.
It’s important to make sure you have everything you will need ahead of time. These items are listed below.
- Video source
- Video cables
- (Optional) Ethernet or fiber cables
- (Optional) Power adapter(s)
It’s also important to test everything in a simplified setup ahead of time to make sure everything works and that you understand how it works.
In order to set up your video extender, complete the following:
- Position your video transmitter near your video source.
- Connect the video output from your video source to the video transmitter.
- (Optional) Connect the power adapter to the video transmitter.
Note: Not all video extenders require external power, or require external power on both ends. Refer to the manual for more information.
- Position your video receiver near your display.
- Connect the video output from your video receiver to your display.
- (Optional) Connect the power adapter to the video receiver.
- If using a wired video extender, connect your network cabling between the video transmitter and the video receiver.
- (Optional) If you are extending anything else supported by your video extender connect those devices to the transmitter and receiver.
- (Optional) If you are using a wireless extender, there may be a sync button you need to press to pair the transmitter and receiver.
Now that you have set up your video extender, you can check that everything is working. You should be able to see your video source's output on the display connected to the video receiver.
If at this point you have further questions regarding a Startech.com video extender, contact our technical support team for further assistance.
To get the highest quality signal from your source to your display when you use an HDMI extender, do the following:
Make sure that the HDMI versions of the source, extender, and destination are compatible. For example, if you require 3D support, make sure that all of the devices can support 3D over HDMI.
Use the least amount of adapters, splitters, or converters as possible. Each device that you use in your setup creates additional points of potential failure and creates more steps for an HDCP key to hop through, which may cause issues with older displays. For more information on HDCP, refer to the following FAQ: http://www.startech.com/faq/video_signal_converters_HDCP.
Use an HDMI extender that exceeds the requirements of the setup. For example, if you need to extend the signal 200 feet, it is best to use an extender capable of more than 200 feet.
Make sure that all of the CAT 5/6 runs are as straight as possible, with the least amount of coiling.
Make sure that all of the patches, wall jacks, and cables use the highest possible CAT specification, (for example, CAT 6), and were tested to conform to the standard.
Use patches, wall jacks, and cables with the same pin configuration. For more information on T568A versus T568B wiring, refer to the following FAQ: http://www.startech.com/faq/network_cables_a_vs_b_pinout.
Keep the cabling away from sources of high noise.
Make sure that you use adequate electrical grounding in your setup.
When you troubleshoot issues with a video extender, there are some quick tests that you can complete to rule out potential problems. You can test to make sure that the following components are working correctly and are not the source of the issue:
Video and Ethernet cables
Video source (such as a DVD player or computer)
Video destination (such as a monitor or projector)
Note: When you are testing setup components, you should avoid using video adapters. For example, if you are converting a VGA source to HDMI for use with an HDMI extender, you should use an HDMI source when you test the components.
To test your setup components, try the following:
Use the cable, video extender, video source, and video destination in another setup to see if the problem is with the components or the setup.
Use a different cable, video extender, video source, and video destination in your setup to see if the problem persists. Ideally, you should test a component that you know works in another setup.
When you test your cables, it is recommended that you do the following:
Test each cable individually.
Use short cables when you are testing.
When you test the video source and video destination, it is recommended that you do the following:
Remove the video extender from your setup and test to make sure that the video source and video destination work together without the video extender.
Test to make sure that the video source and video destination work together at the resolution that you want to use.
Note: In order for your setup to work properly, the video source, extender, and destination all need to support the resolution that you are using.
This device supports up to 4Kx2K resolutions @30 Hz with a color depth of 8 bits. If you are running a 4K resolution at a refresh rate higher than 30 Hz or a color depth higher than 8 bits, your display will appear blank.
To resolve this issue, you need to lower the resolution, refresh rate, or color depth, by completing any of the following:
- Connect a display to OUT 1 that is only capable of 4K at 30 Hz with a color depth no higher than 8 bits.
- Connect the least capable display to OUT 1.
- Connect an additional display to your video source (for example, a video card in a computer) and use this display to reconfigure the display connected to OUT 1 to run at 30 Hz and 8 bits color depth (or lower).
Compliance and Safety
- If product has an exposed circuit board, do not touch the product under power.
- If Class 1 Laser Product. Laser radiation is present when the system is open.
- Wiring terminations should not be made with the product and/or electric lines under power.
- Product installation and/or mounting should be completed by a certified professional as per the local safety and building code guidelines.
- Cables (including power and charging cables) should be placed and routed to avoid creating electric, tripping or safety hazards.
* Product appearance and specifications are subject to change without notice.