HDMI® Extender Using Cat5e or CAT6 Cable - Extend Upto 98ft
    Product # 8121
    HDMI® Extender Using Cat5e or CAT6 Cable - Extend Upto 98ft
    Product # 8121
    In Stock This item should ship today (1/17/2017) if ordered within 8 hours 54 minutes

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    HDMI® Extender Using Cat5e or CAT6 Cable - Extend Upto 98ft

    Use this simple and effective HDMI® extender to send High Speed (1080p) HDMI® signals up to 30 meters (98 feet) over Cat5e/6 cable!

    Most extenders are small boxes, which must be mounted and which require additional cables to use. While they can usually handle longer distances, if you don't need to take the signal more than 30 meters, this simple pair of extender adapters is the right solution.

    Each adapter plugs into your HDMI ports, with the sender in the source device and the receiver at the display. Then just run a pair of Cat5e/Cat6 cables between the adapters and you're in business! You won't need to provide external power - it gets the power it needs from the HDMI source device.

    The adapters support up to 1080p resolutions and digital audio, including DTS® Digital, DTS-HD Master Audio™, and Dolby TrueHD™. They support up to 8-bits per channel (24-bit total) Deep Color and HDCP pass-through.

    Note: The packaging for this extender is improperly printed and erroneously identifies this device as a 1x2 Splitter. This is in fact an HDMI extender over Cat5e/6 cable and not a splitter device. Updated packaging is on order and this will be corrected as soon as possible. We apologize for any inconvenience or confusion this may cause.

    Support Files:

    HDMI, the HDMI Logo, and High-Definition Multimedia Interface are trademarks or registered trademarks of HDMI Licensing LLC in the United States and other countries.

    DTS is a registered trademark and the DTS logos, Symbol, DTS-HD and DTS-HD Master Audio are trademarks of DTS, Inc.

    Dolby and the double-D symbol are registered trademarks of Dolby Laboratories.

    Input Video Signal 0.5 - 1.0 volts p-p
    Input DDC Signal 5 volts p-p (TTL)
    Maximum Resolution 1920x1080p
    Operating Frequency 50/60 Hz
    Video Amplifier Bandwidth 165 MHz / 1.65 Mbps
    Maximum Transmission Distance 30 meters
    Interlaced Resolutions (50 & 60 Hz) 480i, 576i, 1080i
    Progressive Resolutions (50 & 60 Hz) 480p, 576p, 720p, 1080p
    External Power Supply none
    Power Consumption (Max) 5W
    Cat5e/6 Wiring Standard IEEE-568B
    Adapter Dimensions 2 1/8" long (2 23/32" including cable boot)
    by 1 7/16" wide by 27/32" thick
    Cable Length 8"
    Operating Temperature 0° C to +70° C
    Operating Humidity 10% to 85% RH (no condensation)
    Storage Temperature -10° C to + 80° C
    Storage Humidity 5% to 85% RH (no condensation)
    Regulatory Certifications FCC, CE


    • Up to 30 meter transmission distance over Cat5e/6 UTP cable
    • Supports up to 1080p resolution
    • Supports LPCM, DTS® Digital, DTS-HD Master Audio™, and Dolby TrueHD™ audio
    • Supports HDCP pass-through
    • 165 MHz/1.65 Gbps bandwidth
    • Supports 8-bits per channel (24-bits total) Deep Color
    • No setup required, just plug it in and start using it!
    • Uses IEEE-568B UTP wiring standard
    • Lightweight plastic construction
    • 8" cable on each adapter
    • Gold-plated HDMI® connectors

    HDMI, the HDMI Logo, and High-Definition Multimedia Interface are trademarks or registered trademarks of HDMI Licensing LLC in the United States and other countries.

    DTS is a registered trademark and the DTS logos, Symbol, DTS-HD and DTS-HD Master Audio are trademarks of DTS, Inc.

    Dolby and the double-D symbol are registered trademarks of Dolby Laboratories.

    3.9 / 5.0
    194 Reviews
    5 Stars
    4 Stars
    3 Stars
    2 Stars
    1 Star
    Overall, this is agreat product that does what it says, solves several problems, and is reliable... IF IT IS USED ONLY WITH CAT5 CABLE.

    PROS: This is a great product and is a reliable solution for HDMI cables of any length of up to 100 feet. Since it is a pigtail design which includes HDMI connectors there are no additional HDMI cables required and it is a superb low cost solution for making variable length HDMI cables. We use them primarily to run the output of A/V receivers to TV HDMI inputs, when the TV and equipment are not in the same proximity. Just keep this and bulk CAT5 cable and connectors in stock and you are all set (provided you know how to terminate the cat5 connectors, or purchase pre-made cat5 cables of the desired length.

    CONS: In the scenario listed above: using the 8121 out of an A/V receiver and into a TV, you WILL experience intermittent video loss IF YOU USE CAT6. (we have exclusively tested this product with Monoprice bulk cat5 & ca6 wire and connectors)

    If you find yourself in this situation and you cannot change the cat6 cable to cat5, the cure is to remove the 8121 and replace it with the 6532 and two short HDMI cables. Much more expensive solution, but it will work.
    October 23, 2015
    Versatile and Affordable
    I purchased this extender pair when I needed to be able to view my computer screen on a television a floor below the office where the computer resides. By connecting this at the television and at the computer, and then running a pair of in-wall ethernet cables between floors, I now have a great-looking, permanent solution, and I'm planning on expanding it further when I develop another room of the house into a media den. The ethernet I used was terminated at the wall with a typical keystone jack, with more-nicely-finished CAT5e cables running from the wall jacks to the sender and receiver units for a "professional" look. Even with six lengths of ethernet in between (three per channel), there have been no issues with signal loss.

    The only reason I can't give this a perfect 10/10 is because the weight of the sender and receiver ends is sufficient to put some minor strain on the HDMI ports they are connected to. Left hanging by themselves, they are susceptible to the "male" end of the sender/receiver bending very slowly over time, especially if the ethernet cables connected are accidentally tugged. Fortunately, this is easily remedied by securing the "box" of each unit against something structural I used double-sided tape to affix one to the back of the TV, and used cable ties to bundle the unit with other large cables coming out of the back of my PC, to lessen the strain.

    PROS: Extraordinarily easy setup.

    Versatile not easily confused. Ethernet can be adapted/re-terminated mid-line without causing too many issues.

    CONS: Weight of the sender and receiver units can put strain on the HDMI port they are connected to.
    July 7, 2015
    It does work, but...
    This item does work with my 2 50ft manufactured RJ45 cables. I have not tested this product with longer runs. One major point to keep in mind is that trouble shooting/pro installation/dealer support is always key to any product purchase.

    I often see friends and fam waste their time returning products because the product "doesn't work" when it is initially plugged in. Please do yourself a favor and trouble shoot before you return any company's product. Human error and/or lack of realistic expectation are major factors in any purchase.

    This item did not work when paired with my VSX-03 Pioneer Elite AVR. However, when tested with both my DirecTV boxes and Xbox 360 (after adjusting output settings) it perform as advertised. Please keep in mind this AVR is several years old. It functions currently with a 24ft HDMI to my PRO-111 plasma perfectly.

    It's hard to know all the pros and cons to a product unless you consult a true professional. I am keeping this product for future use.

    PROS: Cost effective.
    No need additional cables or power supply.

    CONS: Didn't work with my AVR. NOT this products fault! I believe a powered version or in line HDMI repeater would work but I have not yet tested.
    January 19, 2012
    Hdmi Extender
    I had this functioning good for 11 months, then on the 12th month I started having alot of display problems. I contacted customer tech support and got a we cant help you out because it is 1 year old response. Also they offered me a $2.00 discount to order another. Stay away from this unit and buy from a respectable dealer who will stand behind their products.

    PROS: Worked decent for 11 months.

    CONS: Quick Working
    May 15, 2013
    This is a great way to extend HDMI video throughout the house without having to worry about HDMI cable prices. Not that Monoprice does not offer great prices... But this item truly gave me flexability and room configuration options. We are always changing the layout of the house and love that we can always use the extender between our TV and the computer.

    PROS: Portable, Convenient, and Versatile.

    CONS: None
    May 1, 2012
    Great Extender for Cost
    Works in 1080p most people say it doesn't but does. Make sure your tv can handle 1080p most tvs under 42" only run 720p because you don't need or will see the difference from 720p or 1080p on smaller size tvs. This extender does not work with the 4x4 matrix from monoprice. However if you use a 1x4 or some type of switch after your 4x4 matrix it does work fine.

    PROS: 1080p


    100+ Ft

    CONS: Does not work with the matrix 4x4 that mono price sells.
    February 26, 2014
    Worked Great
    Worked great over a 35 foot run. I did end up buying an RJ45 test kit because one of my wires didn't crimp right (worked for computer but this must use all four pairs). Once everything was crimped correctly, simple plug and play.

    PROS: Very simple setup

    CONS: No IR
    November 16, 2011
    I used this in conjunction with two Monoprice 50ft shielded CAT6 cables run through my walls to connect my pc to monitor. Worked like a charm - no noise or degradation of quality. My monitor also has an analog 3.5mm output for audio which converts the digital sound input from the HDMI cable. I was worried this may not work but I was happily surprised that it does!
    December 13, 2011
    Works great with newer TV
    Works great as advertised. Running a short distance of about 20 ft picture is perfect. I replaced a set of intellix ($$$) baluns that was running an analog signal. Since Direct Tv changed their software, I was having to change to 480 every time I wanted to watch my kitchen TV and then back to 1080 going back to family room. Only I kept forgetting and was watching standard def on my 60" Sony half the time! Now I have HD signal going to both and no longer have that problem!
    I had this connected to a 3 year old LCD TV and got no signal. I thought the product was either defective or didn't work. Monoprice promptly cross shipped a replacement. The replacement didn't work either. I was ready to get a new thinner LED TV for the kitchen island and decided that it was worth a try to see if the TV was the issue. Lo and behold it was indeed the TV. The new set picked up the HDMI signal no problem.

    PROS: Works great as advertised

    CONS: May not work with older TV's even if they have HDMI
    January 19, 2012
    Work Great
    Good product thus far, just as stated in specs. Using Cat5e, carry signal from a central AV room. Have not encountered problems. Purchased one set as a test, after good performance bought 4 more and replaced powered units.

    PROS: Non-powered, stable picture. Inexpensive.

    CONS: Reviewer advised cannot be used in a splitter. Cannot carry 3D.
    June 27, 2015
    Start typing your question and we'll check if it was already asked and answered. Learn More
    Browse 3 questions Browse 3 questions and 2 answers
    Can I use a cat5 converter on this to run longer runs?
    A shopper on Dec 20, 2016
    HDMI Extender Using Cat5e or CAT6 Cable - Extend Upto 98ft
    HDMI Extender Using Cat5e or CAT6 Cable - Extend Upto 98ft
    1x2 HDMI Amplifier Splitter
    1x2 HDMI Amplifier Splitter
    BEST ANSWER: Should not be a problem, just be certain not to exceed the rated resistance for your cat5/6 conversation connection.
    How would i connect the cat six cable to send the signal from my cctv dvr to my television, i.e would i need to connect both cables crossed or just t568a or b?
    New User U on Dec 7, 2016
    BEST ANSWER: Hello, and thank you for your question. For this device, it will require both Cat6 ports be used to transmit the HDMI signal. Each port will transmit a portion fo the HDMI signal, so both will be required to carry the full signal to the opposite end.
    Is there an HDMI extender that will support the 4K resolution on my TV?
    A shopper on Dec 29, 2016
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