Atlona > Products > Extenders > STP/UTP > HDMI > ATLONA HIGH SPEED HDMI EXTENDER KIT OVER SINGLE CAT 5/6/7 WITH FULL 3D SUPPORT (1080p up to 130ft)



Model Number: AT-HD4-SI40SR

The Atlona AT-HD4-SI40SR is an HDMI over Cat 5/5e/6/7 Extender Kit, which allows Deep Color and full 3D support plus DTS-HD and Dolby TrueHD over a single low cost Cat 5/5e/6/7 interface with up to 130ft full HD 1080p or 1920x1200. The Atlona AT-HD4-SI40SR is a perfect solution for extending a Blu-Ray player, Sony PlayStation or Apple TV from a remote location.


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3D enabled



The Atlona AT-HD4-SI40SR is an HDMI over Cat 5/5e/6/7 Extender Kit, which allows Deep Color and full 3D support plus DTS-HD and Dolby TrueHD over a single low cost Cat 5/5e/6/7 interface with up to 130ft full HD 1080p or 1920x1200. The Atlona AT-HD4-SI40SR is a perfect solution for extending a Blu-Ray player, Sony PlayStation or Apple TV from a remote location.



Key Features:

  • 7 selectable on board EDID modes plus learning feature to ensure optimal display requirements are met
  • High Speed HDMI - Deep Color & full 3D support
  • Extends the transmission up to 130ft (40m) from an HDMI source at Full HD 1080p
  • Pure uncompressed 7.1ch digital audio preserved over HDMI to Cat.5/5e/6/7 cable transmission
  • DTS-HD and Dolby TrueHD high bit rate audio support
  • HDCP Compliant
  • Adjustable 8-level equalization control compensation to optimize signal transmission when longer HDMI cables are necessary
  • Allows cascading
  • Wall mounting housing design for easy and robust installation

Technical Specifications:

  • Transmitter Input: HDMI (Type A)
  • Transmitter Output: RJ45
  • Receiver Input: RJ45
  • Receiver Output: HDMI (Type A)
  • HDCP/EDID Compliant: Yes
  • Resolution Support: Up to1080p or 1920x1200
  • Deep Color support
  • Full 3D support: Yes
  • Audio support: Up to 7.1 channel uncompressed digital audio
  • Signal equalization: 8-level digital control at RX
  • EDID: 7 presets plus learning capability
  • Dimensions: 2.9” x 3.5” x 1” (75 x 90 x 25mm)
  • Weight: 1.1lbs (480g) each
  • Power Supply: 5V 4A DC  (universal 110/220v)

Package Includes:

  • 1x AT-HD4-SI40SR kit (Transmitting and Receiving Modules)
  • 2x 5V Power Supply (removable A/C plug and locking style pin connector)
  • 1x User’s Manual

Do NON UTP Switchers Get a New Lease on Life?

By Dan Tye, Technical Sales and Support Manager, Atlona

This question is one that Atlona has been asking for the last two years. As the world of residential and commercial installation has migrated towards native UTP HDMI switchers, it seemed as though the "local HDMI" switcher was on its way out. Surely, with the ranges required to reach destination displays in most environments today, these switches would be relegated to the Smithsonian with 8 track tapes and 8mm cameras. They have to be, right? These questions weighed heavily on Atlona's mind as they contemplated whether or not to replace their previous generation HDMI switchers, the AT-HD-V44 and AT-HD-V88. Based on the amount of UTP matrix switchers flooding the market, and the future of HDMI output only matrix switchers seemed to be in serious doubt. While these native HDMI switchers were at a lower price point than their UTP counterparts; their limited range, as far as an HDMI cable, made them less desireable for larger residential or commercial integration.

What Atlona found when sourcing feedback from their dealers and distributors is that integrators had started using them with HDMI extenders to offer similar functionality as a UTP switch. As late as last year, this proved extremely problematic. We all know the inherent, well, fickleness of HDMI. Many installers consider HDMI to be a four letter word, even with the analog sunset looming. Some of the installers found out the hard way that these early HDMI switchers didn't include any EDID management. This proved to be a critical issue in the field, as the different EDID files from multiple displays used in these residential installs would often conflict when switched through the matrix. This would lead to having thedesired range with no picture and incorrect sound formats being passed. The secondary issue was the difference in robustness of the HDMI vs. UTP matrix switchers. There seemed to be, in the spirit of reducing cost, a significant difference between the details and features between these two types of switchers. Power issues coupled with EDID problems caused more than one installer to lose all the revenue built in a job due to time spent troubleshooting. This frustration led to many installers to dismiss the use of HDMI switchers and just "bite the bullet" and try to upsell their clients on full UTP solutions. This led to an uncomfortable situation for a lot of installers. They now had to sell a solution well in excess of what their customers needed and increased the overall system cost they felt comfortable supporting.

So what is an installer to do? Until recently, installers were forced to sell so called "binary" systems. These matrix switchers looked for some time to be the best solution for the installer's woes. Featuring both HDMI & UTP outputs, with EDID support they appeared to be poised to save the day. After all, they're less expensive than comparable full UTP solutions and deal with that pesky EDID issue. The flaw in this type of product is that you're still paying more than for a native HDMI switcher, with sender and receiver baluns included. These products also include additional capacity that you don't need because of these "binary" ports. The good news is, there is a solution!
Recently Atlona has released two new native HDMI switchers. The AT-H2H- 44M and AT-H2H-88M are one of the first full featured family of HDMI switchers released on the market. What do I mean by full featured you might ask? I am referring to true EDID management! That's right. One of the most critical issues in matrix HDMI installs has been addressed in this product family. In fact, Atlona included the same EDID management system that is featured on their HDBaseT AT-PRO2HD88M matrix switcher. Additionally, these units have had power issues addressed by moving to a 24V power system with earth grounds. This is extremely important as several of Atlona's competitors use 12V power with floating grounds. This can lead to unreliable power situations, which if you're called to troubleshoot, can quickly eat away at your built-in labor dollars.

You might be saying, "That's great, but I'm still limited to HDMI cables out of the switch for consistent reliability."
Not so in the case of these Atlona units. Knowing that installers sometimes need additional range and flexibility within their switching environment, Atlona has extensively tested these new switchers with their full family of extender products. This testing has revealed compatibility with previous generation chipsets as well as HDBaseT and HDBaseT Lite technology. In testing, Atlona not only tested the output of local sources through the extenders, they tested extending sources that were themselves routed to the matrix through extenders. What this means is that you can have a Blu-Ray player 330ft away from the Matrix switch, which then sends it's signal another 330ft to the local display, for a total of 660ft. With this new level of flexibility, installers have even more tools in their arsenal to adapt to innumerable installation environments.
With the ability to only supply extender pairs on the ports that have to have them, installers are now able to offer a reliable solution to their customers that will be as attractive financially, as they are easy to install.

As an example, the Atlona ATH2H-88M at its MSRP price of $2,999.99 + 8 extender sets totals at $4,839.91. This is $1,159 less than the next closest binary competitor which doesn't include receivers! These competitors might think it's a SNAP to sell their solutions however Atlona knows that installers will see the extreme value associated with this new family of Matrix Switches. Don't let an HDMI matrix switch be a KEY failure in your system design or installation. Atlona will keep you out of the STORM and give you the tools you need to get the job done right the first time. Coupled with Atlona's 3 year warranty and Atlona Advantage program, this is a great way for installers to offer their customers a full featured solution without having to break the bank. When you need solutions that work, trust Atlona, your complete integration partner.

Testing Equipment Used

AT-H2H-88M AT-HD4-V110SR extender Windows 7 PC (HDMI out)
AT-HD4-SI40SR extender Sony Blu-Ray AT-DIS7-PROHD
AT-HD4-V40SRS extender Apple TV (2nd Gen) Sony Bravia 46" LEDTV
 Declaration of


Set up and EDID learn
  Why my Pioneer AVR (Elite VSX-42) has no sync when being used in conjunction with AT-HD4-SI40SR?
  All AT-HD4-SI40SR with serial number after 0140251612111501000 have updated transmitters (TX). If you have an older version, the TX will need to be updated. Please contact Atlona Technical Support for assistant.

  I can get 2D video but not 3D video, what is causing this?
  Make sure that the mode setting is set to MODE4 (7.1 channel audio) or MODE6 (2 channel audio).

  I am using these extenders with a variety of sources, some work and others do not. What can cause this to occur?

Certain sources are not as optimized for extenders and others are thus you may want to perform an EDID learn. (Please review the video for a step by step process)

  Can the AT-HD4-SI40SR go further than 130ft if I use a CAT6?
  The AT-HD4-SI40SR is optimized to go a maximum distance of 130ft when transmitting 1080P over a single cable. If requiring longer distances, one can lower the resolution of the source to 1080I or 720P to gain up to 200ft.

  When I turn ON/OFF any appliance, I am getting an intermittent disturbance in picture. What is causing this?
  If you are seeing a flash of video on your screen when turning appliances on or off, this might mean that your CAT cable is picking up electrical interference. To fix this, please try relocating the current CAT cable away from any outside sources of electrical interference both inside and outside any walls the cable is near. If this doesn’t help, you may need to run a shielded CAT cable and ensure it is in 568B termination. Also make sure the cable is not near any Romex cable lines.

  What type of category cable do you recommend for these units?
  Atlona recommends using 568B terminated CAT5E or CAT6 solid cables.

  I just bought a brand new set of these extenders and they are not working.

  What is the expected performance for each category cable type with AT-HD4-SI40SR?
Performance ratingType of category cable
SolidUnshielded (UTP)************
Shielded (STP)**********
StrandedUnshielded (UTP)*****
Shielded (STP)****
TerminationPlease use EIA/TIA-568-B termination (T568B) at any time