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Best Seller: Economical 4K HDBaseT HDMI Extender, 70M HDMI Extender with 2-Way IR, CEC, PoE & RS232
SKU: 4KEX70-L
€119.99
Partner Discounts | Free Quote
● 4K@60Hz 4:2:0 8bit HDR: Transmits uncompressed 4K@60Hz HDMI signal up to 40m/130ft, and 1080P@60hz up to 70m/230ft over a single Cat 6a/7 cable. Also supports Dolby Atmos, DTS:X, Dolby True-HD, DTS-HD Master, LPCM 2.1/5.1/7.1 CH.
● Multi-Functional HDBaseT Extender: Supports bi-directional PoE, IR, CEC and RS232, as well as automatic EDID management. HDMI 1.4/HDCP 2.2 compliant with HDR (4K@60hz 4:2:0 chroma subsampling only).
● Plug & Play, Excellent Compatibility: Works perfectly with PCs, game consoles and most HDMI display devices. No software or driver is required; just plug and play.
● Slim Appearance & Wide Applications: Compact and space-saving, as small as a smartphone. Ideal for digital signage, home theater, boardroom, classroom, meeting room, and any other locations requiring long-distance HDMI signal extension.
● Important Notes: This 4K HDMI extender is a transmitter and receiver kit; we don’t sell them separately. One transmitter can work with only one receiver. All accessories are also not sold separately. The extender is not HDMI 2.0 compliant. Please refer to the 4KEX70-ARC-H2 HDMI 2.0 extender if you need.
If you’re not satisfied, we’ll refund your payment. No hassle, no risk.
In stock
Designed for Long-Distance HDMI Extension
AV Access 4KEX70-L 4K HDMI extender is plug-n-play and easy-to-use. It boasts up to 4K video resolution, multichannel audio, and bi-directional IR/CEC/RS232/PoE. Let’s watch the video tutorial on the left to learn how it can be your best choice.
Typical Applications
AV Access 4KEX70-L 4K HDMI extender is ideal for any applications where you need long-distance HDMI signal extension. Here are some applications for your reference.
Home Theater
Transmits 4K ultra HD HDMI signal from your equipment room in the basement to a large TV in the living room upstairs. Extends an HDMI source of your cable box in the living room to the dinning room or bedroom. Our 4K HDMI extender ensures you enjoy the sharpest image and finest audio.
Bar & Restaurant
Transmits 4K HDMI signal from your control room to the large TV in front of the tables, extends digital menu or advertising video to the digital signage inside or outside. Our 4K HDMI extender ensures your patrons enjoy the best screen viewing experience possible.
Retail Store & Shopping Mall
Transmits 4K HDMI signal from your equipment room to the advertising display device anywhere in your shops, extends promotion video to the digital signage inside or outside the mall. Our 4K HDMI extender allows you to promote your brand and boost business with superior video and sound.
Classroom & Conference Room
What if your HDMI source is far away from the projector screen installed in the front of a classroom or meeting room? This highly reliable 4K HDBaseT extender can be adopted to transmit 4K ultra HD video signal up to 40m/130ft, ideal for extending teaching materials and sharing contents.
Enjoy Finest Video and Audio
With the advanced HDBaseT technology, this HDMI extender can transmit 4K@60Hz (4:2:0) HDMI signal up to 40m/130ft, and 1080P@60hz up to 70m/230ft over a single Cat 6a/7 cable. It brings ultra-high definition picture with more vivid visual effect and no signal loss or delay. Also, it supports audio formats like Dolby Atmos, DTS:X, Dolby TrueHD, DTS-HD Master and LPCM 2.1/5.1/7.1CH.
Notes:
1. This 4K HDMI extender is not HDMI 2.0 compliant. Please refer to the 4KEX70-ARC-H2 HDMI 2.0 extender if you need.
2. It is recommended to use a Cat 6 or above cable for optimal picture quality.
Bi-Directional IR Control
This cost-effective 4K HDMI extender also supports bi-directional IR pass-through, and comes with an IR signal emitter and an IR receiver. Thus, you can easily control an HDMI source from the display’s location or control the display from the source’s location.
Bi-Directional PoE & RS232
Only one power adapter is needed to power both the 4K HDMI transmitter and receiver. And with bi-directional RS232 pass-through, you can effortlessly control both HDMI source and display at remote side, enjoying more convenience.
Work Perfectly with Other HDMI Devices
This 4K HDBaseT extender can work perfectly with PC, PS4/5, XBox, DVD Player, Apple TV, Satellite Box, Cable Box, etc. It is ideal for digital signage, home theater, boardroom, workshop, seminar, classroom, conference, gaming, video production, etc.
Ultra-Slim & Plug-n-Play Design
The 4K HDMI transmitter and receiver kit is compact and portable, as small as a smartphone. They are easy to install and space-saving; you can almost place them everywhere in your house. Besides, this HDBaseT HDMI extender is plug and play, no additional software or driver required.
 |  |  |  |  |  |  | |
| 4KEX40-eARC | 4KEX70-L | 4KEX70-H2 | 4KEX70-ARC-H2 | 4KEX100-H2 | 4KEX300-F | HDW100 | |
| Supported Video Resolution | Up to 4K@60Hz 4:4:4 | Up to 4K@60Hz 4:2:0 | Up to 4K@60Hz 4:4:4 | Up to 4K@60Hz 4:4:4 | Up to 4K@60Hz 4:4:4 | Up to 4K@60Hz 4:4:4 | Up to 1080p@60Hz |
| Transmission Range | 230ft (70m): 1080P; 130ft (40m): 4K@60Hz 4:4:4 | 230ft (70m): 1080P; 130ft (40m): 4K@60Hz 4:2:0 | 230ft (70m): 1080P; 130ft (40m): 4K@60Hz 4:4:4 | 230ft (70m): 1080P; 130ft (40m): 4K@60Hz 4:4:4 | 330ft (100m): 1080P; 330ft (100m): 4K@60Hz 4:4:4 | 1000ft(300m):4K & 1080P | Wireless: 200m/656ft (line of sight), Wired: 120m/394ft |
| HDMI | 2.0 | 1.4 | 2.0 | 2.0 | 2.0 | 2.0 | 1.3 |
| HDCP | 2.3 | 2.2 | 2.2 | 2.2 | 2.2 | 2.2 | 1.4 |
| HDMI Audio Channel | 7.1 Channel | 7.1 Channel | 7.1 Channel | 7.1 Channel | 7.1 Channel | 7.1 Channel | Stereo |
| PoE/PoC | Bi-Direction | Bi-Direction | Bi-Direction | Bi-Direction | Bi-Direction | No | No |
| IR Control | Bi-Direction | Bi-Direction | Bi-Direction | Bi-Direction | Bi-Direction | Bi-Direction | Uni-Direction |
| RS232 | No | Yes | Yes | Yes | Yes | Yes | No |
| HDR | 4K@60Hz | 4K@60Hz | 4K@60Hz | 4K@60Hz | 4K@60Hz | 4K@60Hz | No |
| ARC & eARC Support | Yes, ARC & eARC | No | No | Yes, ARC | No | No | No |
Specifications
| Technical | |
| Video Signal Type | HDMI 1.4, HDCP2.2 |
| Audio Format | Stereo, PCM 2.1/5.1/7.1, DTS, Dolby, pass through |
| Input/Output Resolution Support | Up to 4K@60Hz 4:2:0 |
| Maximum Data Rate | 10.2Gbps |
| General | |
| Operating Temperature | 0°C to 45°C (32°F to 113°F) |
| Storage Temperature | -20°C to 70°C (-4°F to 158°F) |
| Humidity | 10% to 90%, non-condensing |
| ESD Protection | ±8kV (Air-gap discharge)/ ±4kV (Contact discharge) |
| Surge Protection | Voltage: ±1 kV |
| Power Consumption (Maximum) | ≤8.88 W (Pair) |
| Device Dimensions (W x H x D) | 108.8 mm ×15 mm ×64.2 mm/ 4.29” x 0.59” x 2.52” |
| Product Weight | TX/RX: 0.18kg/0.40lb |
| Technical | |
| Video Signal Type | HDMI 1.4, HDCP2.2 |
| Audio Format | Stereo, PCM 2.1/5.1/7.1, DTS, Dolby, pass through |
| Input/Output Resolution Support | SMPTE: 1280x720P1,2,3,4,5,6,7,8, 1920x1080I6,8, 1920x1080P1,2,3,4,5,6,7,8, 3840×21602,3,5,6,8, 4096×21602,3,5,6,8 VESA: 800×6008, 1024×7688, 1280×7688, 1280×8008, 1280×9608, 1280×10248, 1360×7688, 1366×7688, 1400×10508, 1440×9008, 1600×9008, 1600×12008, 1680×10508, 1920×12008 1 = at 23.98 Hz, 2 = at 24 Hz, 3 = at 25 Hz, 4 = at 29.97 Hz, 5 = at 30 Hz, 6 = at 50 Hz, 7 = at 59.94 Hz, 8 = at 60 Hz; NOTE: 4096×2160/3840×2160@50Hz/60Hz is based on chroma sub-sampling 4:2:0 8-bit only |
| Maximum Data Rate | 10.2Gbps |
| General | |
| Operating Temperature | 0°C to 45°C (32°F to 113°F) |
| Storage Temperature | -20°C to 70°C (-4°F to 158°F) |
| Humidity | 10% to 90%, non-condensing |
| ESD Protection | ±8kV (Air-gap discharge)/ ±4kV (Contact discharge) |
| Surge Protection | Voltage: ±1 kV |
| Power Consumption (Maximum) | ≤8.88 W (Pair) |
| Device Dimensions (W x H x D) | 108.8 mm ×15 mm ×64.2 mm/ 4.29” x 0.59” x 2.52” |
| Product Weight | TX/RX: 0.18kg/0.40lb |
In the Box
- 1 x 4KEX70-L 4KHDMI Transmitter
- 1 x 4KEX70-L 4K HDMI Receiver
- 1 x DC 18V1A Power Adapter
- 1 x IR Emitter
- 1 x IR Receiver (30 KHz ~ 50 KHz)
- 2 x 3.5mm 3 Pin Phoenix Connector
- 1 x User Manual
Troubleshooting FAQ
1. What can I do if there is no video output?
- Check if the “Link” LED indicator is solid on. Also, check if the “HDCP” LED indicator is solid on or blinking.
- Make sure the source device and the display device are powered on. And make sure the source device is outputting video signal while the correct HDMI input channel is selected on the display device.
- Connect the source device to the display device directly via an HDMI cable, then set the source resolution to 4K@30Hz or 4K@60Hz 4:2:0. If these two resolutions are not available, then set to 1080P. After you set the default resolution, please re-connect the source device and the display device to the HDMI extender.
- Make sure all of your HDMI cables work normally. You can connect the source to the display device directly via one of these HDMI cables, to check if video can be shown normally on the display.
2. What can I do if the “Link” LED indicator is off or blinking?
- It is recommended to use a Cat5E/6/6A/7 cable, instead of Cat5 or flat cable.
- Please make sure the total length of your cable is less than 70m/230ft for 1080P, 40m/131ft for 4K resolution.
- Please make sure the connectors at both ends of the cable meet the IEEE T568B standard.
- Use a new cable, or try crimping your Cat cable connectors according to the IEEE T568B standard.
- If you need to use patch cables at both ends, the length should be as short as possible, no more than 5m/16ft. Please ensure all connectors meet the same standard (IEEE T568B). Also, please note that the total length of the patch cables and the Cat cable should not be over 70m/230ft.
3. What can I do if IR connection is not working?
- Check if your IR connection method is correct. The IR receiver cable needs to be connected to the “IR In” port at one end, and the IR emitter cable needs to be connected to the “IR Out” port at the other end. Please note that the 3.5mm cable connectors need to be fully inserted into the IR ports.
- Check if you use the remote controller correctly and if you place the IR emitter head correctly. When you use the remote controller, it needs to be directly facing the IR receiver head. Besides, the IR emitter head should be placed closely to the IR receiving window of the controlled device.
- Try controlling the source device directly via your remote controller, without using the HDMI extender. Then check if the IR connection works.
4. What can I do if RS232 connection is not working?
- Check if the connection method of the RS232 cable between the HDMI extender and the control/controlled device is correct. It should be “TX-RX, RX-TX, GND-GND”.
- Perform an RS232 loopback test to see if the HDMI extender’s RS232 pass-through function can work normally.
- Try connecting the control device and the controlled device directly without using the HDMI extender. Then check if the RS232 connection works.
Other FAQ
1. What's HDBaseT?
HDBaseT is a connectivity standard for transmission of video, audio, Ethernet, USB 2.0, IR and other communication signals via a CAT cable. Here to learn more about What’s HDBaseT and whether you shall choose an HDBaseT extender.
2. Can I purchase the receiver/transmitter only?
No, they work only in pair via direct connection and are sold in a set.
3. Can the IR control work in either direction?
Yes. This 4K HDBaseT extender supports bi-directional IR control.
4. Does this 4K HDMI extender support one-to-many connection?
No, this 4K HDMI extender contains one transmiter and one receiver. We don’t sell them seperately and they can only work through one-to-one direct connection. You may check our HDMI splitters, HDMI switches or extenders over IP (have to work with a network switch).
5. Does the 4K HDBaseT extender pass HDMI CEC commands?
Yes, this 4K HDMI extender does support CEC pass through.
6. Why there is only one adapter offered?
This model supports bi-directional PoE. You can put the adapter on one end and the other end will be powered too.
7. What's HDCP?
HDCP stands for High-bandwidth Digital Content Protection. This protocol is formed to protect digital audio and video content from being copied and distributed. Here to learn more about HDCP 1.4 & HDCP 2.2.
8. Does this HDMI extender support HDCP?
Yes, this product supports HDCP 2.2 passthrough.
9. What's EDID?
EDID is like an identity of a display that records information such as the display dimensions/screen size, original resolution, color properties, frequency range limits, etc. When the source device gets this information, it can deliver the image of certain specs accordingly. Learn more about EDID.
(If this information is not helpful to you, you can raise your question in our community.)
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Michael Randle –
Great set up for long runs
We have a downstairs home theater with a remote receiver upstairs. It’s ~200′ of cabling from the computer downstairs near the TV up to the receiver and 200′ back down to the TV. HDMI runs at that length are amplified/unidirectional and very expensive (~$600 last time we had a run replaced). Now that one of the HDMI cables started having issues instead of shelling out a bunch of cash to have someone fish around in our soffit and insulation I used these little boxes and some pre-existing CAT5e already pulled to both locations.
I’m only running 1080/60p but the signal has been rock solid. Setup was super easy – especially with PoE and only one power adapter required. IR relay is working fine as well. Very impressed by this little piece of kit.
Michael Randle –
Great set up for long runs We have a downstairs home theater with a remote receiver upstairs. It’s ~200′ of cabling from the computer downstairs near the TV up to the receiver and 200′ back down to the TV. HDMI runs at that length are amplified/unidirectional and very expensive (~$600 last time we had a run replaced). Now that one of the HDMI cables started having issues instead of shelling out a bunch of cash to have someone fish around in our soffit and insulation I used these little boxes and some pre-existing CAT5e already pulled to both locations. I’m only running 1080/60p but the signal has been rock solid. Setup was super easy – especially with PoE and only one power adapter required. IR relay is working fine as well. Very impressed by this little piece of kit.
Mike Viehweg –
Best Seller: 4K@60 HDBaseT Extender Kit, 70m/230ft HDMI Extender w/ Bi-directional IR, PoE & RS232 Bought these extenders with AV Access suggestion. Replaced existing extenders after doing some research on line. AV Access was very helpful with information on replacing my previous extenders which I could not replace. Pulled the existing extenders which were 7 years old from the cat 6 and plugged my new ones in with no problems and I get my dish receiver HD signal 70�across the house actually 107�of cat 6 was used originally. Thanks AV Access !
Christopher Neal –
I have had a long, positive experience with AV Access and this product. I purchased it, received it, and installed it easily. It worked flawlessly for three months, then started having an issue which at least one other person here reported, where the power would drop from the link, causing the picture/sound to go off for a second or two, then come back. It happened more and more frequently, at which point I contacted AV Access for support. I contacted them directly through Amazon, which I would recommend if you should need to contact them yourself. They are not based in the US, so keep that in mind when waiting for a reply. 🙂 For me, the reply was within 24 hours. They were very helpful, and the tech support asked good questions while trying to diagnose where the problem could be. After 3 email exchanges, they determined that it was a faulty unit, and authorized a return to Amazon, despite the fact that it was more than 2 months out of the 30 day return window. This was VERY nice! Great customer service. Once Amazon had acknowledged that they had received the return, AV Access also gave me a 10% off coupon to apply towards the replacement unit. Again, great customer service. I’ve had the new unit going fine for about 1 week, so hopefully this unit will be a good one. If not though, I have faith in their customer service that they will make things right for me again.
John Simon –
I bought this after returning a different product on Amazon that claimed HDMI 2.0/4K60 4:4:4 support, but actually cheated by chroma downsampling at the transmitter and upsampling at the receiver. This product is the real deal. It passes chroma subsampling tests and supports true 4K 60Hz YCbCr 4:4:4 (or RGB). I also love that the ports are all on one side, and the status lights on the other, making these devices look good if you want to put them in a visible place. There’s included wall plates too if you don’t want them visible. I’m also a fan of the fact that there’s no local loop-out + EDID switch to get confused over. So great, love the product.
John M. –
I run all sorts of signals over twisted pair. I have over a mile of Cat6 cable running everything from composite video, line level audio, microphone audio and HDMI to a control center in my office. Six monitors mounted on wall for viewing remote sites and computer graphics. I have used 2 wire HDMI extenders and they work fine, but this unit doubles my capacity without installing additional cable. The PoE feature is great as I can power the unit at the source where power is available and do not have to power the unit at the display end. Installation is a breeze – plug in the ethernet cables and HDMI cables, plug one unit in and the HD video and audio are transmitted to the display. Units appear to be very good construction. Will be purchasing more as my system requires.
Keith256 –
Works great connecting directly to Sony Hdbaset Data Projector at church without a reciever. At first I had problems connecting but contacted Ryan at Avaccess and he assured me that it will work. The projector was already installed and quite inaccessible, however were connected by CAT5 to the computer. I tested the transmitter and receiver at home and they worked great. After communication with Ryan, I added a hdmi splitter to the projector which included a 2nd monitor off the splitter feed. Previously I didn’t have the 2nd monitor and my laptop didn’t recognize anything was connected to the hdmi out and did not activate the feed. Since I added the 2nd monitor the projector is working great with high definition signal. This system is alot better than vga or boasting hdmi cables.
John M. –
I run all sorts of signals over twisted pair. I have over a mile of Cat6 cable running everything from composite video, line level audio, microphone audio and HDMI to a control center in my office. Six monitors mounted on wall for viewing remote sites and computer graphics. I have used 2 wire HDMI extenders and they work fine, but this unit doubles my capacity without installing additional cable. The PoE feature is great as I can power the unit at the source where power is available and do not have to power the unit at the display end. Installation is a breeze – plug in the ethernet cables and HDMI cables, plug one unit in and the HD video and audio are transmitted to the display. Units appear to be very good construction. Will be purchasing more as my system requires.
Smitty McGee –
This thing saved me a ton of time and effort to create a no wire / no cable box look for my flush mounted tv on the wall. I ran Ethernet through my basement and back up to the living room and it’s been rock solid since – with the exception of questions I had (which CS got right back to me on). Highly recommend.
Keith256 –
Works great connecting directly to Sony Hdbaset Data Projector at church without a reciever. At first I had problems connecting but contacted Ryan at Avaccess and he assured me that it will work. The projector was already installed and quite inaccessible, however were connected by CAT5 to the computer. I tested the transmitter and receiver at home and they worked great. After communication with Ryan, I added a hdmi splitter to the projector which included a 2nd monitor off the splitter feed. Previously I didn’t have the 2nd monitor and my laptop didn’t recognize anything was connected to the hdmi out and did not activate the feed. Since I added the 2nd monitor the projector is working great with high definition signal. This system is alot better than vga or boasting hdmi cables.
Gregory H. –
The extender was simple to connect and worked immediately with outputs from my Blue Ray player and AppleTV. I did have an issue trying to use the extender with my Scientic Atlantic HDR cable box. The cable box blocked the output to the extender due to and HDCP error. AV Access provided a customer support link with the email purchase confirmation and I contacted them about the HDCP issue. They are in China, so communications were a bit delayed, but we solved the issue by using an AV Access HDMI splitter between the cable box and the extender. You do need to be patient using customer support as email responses are delayed by 12 hours due to the time zone. Despite the email delays, they made every effort to keep me satisfied and that is why they earned a five star rating.
Smitty McGee –
This thing saved me a ton of time and effort to create a no wire / no cable box look for my flush mounted tv on the wall. I ran Ethernet through my basement and back up to the living room and it’s been rock solid since – with the exception of questions I had (which CS got right back to me on). Highly recommend.
Gregory H. –
The extender was simple to connect and worked immediately with outputs from my Blue Ray player and AppleTV. I did have an issue trying to use the extender with my Scientic Atlantic HDR cable box. The cable box blocked the output to the extender due to and HDCP error. AV Access provided a customer support link with the email purchase confirmation and I contacted them about the HDCP issue. They are in China, so communications were a bit delayed, but we solved the issue by using an AV Access HDMI splitter between the cable box and the extender. You do need to be patient using customer support as email responses are delayed by 12 hours due to the time zone. Despite the email delays, they made every effort to keep me satisfied and that is why they earned a five star rating.
Geraldine (verified owner) –
Excellent service , very quick delivery and the product works well ….