A discreet HDMI connection for a longer room.
Place the source equipment where it belongs and keep the viewing area uncluttered. 4KEX70-L carries HDMI video and embedded audio between a matched transmitter and receiver over Cat6a / Cat7 for the specified maximum modes, making longer installed connections easier to plan.
4KEX70-L
Know what connects where.
Connection overview. Check the requirements below for the exact ports, cable type and supported operating mode.
Bring the picture to the right place
Use the transmitter beside the source and the receiver beside the remote display. The specified video limit is 4K60, 4:2:0; distance depends on cable type and the selected signal. 4K: 40m · 1080p: 70m is the relevant planning limit for this model.
Keep the remote end useful
HDBaseT carries HDMI with bidirectional IR, RS232 and CEC support. This model uses the 10.2Gbps HDMI 1.4 video class and does not support ARC.
Plan the cable and power together
Use Cat6a / Cat7 for the specified maximum modes. The matched pair supports power from either end using the supplied adapter. Test the complete link, including short video cables at each end, before pulling cable through walls or securing equipment.
Best for one dependable point-to-point HDMI link.
4KEX70-L is designed to move one HDMI source to one remote display over a dedicated category cable, while also carrying embedded audio and selected control signals.
Source rack to projector or room display
Place the PC, media player or AV receiver at the equipment end and carry the presentation to a display up to 40m at 4K60 4:2:0 or 70m at 1080p60 using Cat6a/Cat7.
Lectern or control desk to front display
A practical wired link for classrooms and training rooms where the source is away from the projector. Bidirectional IR or RS232 can support suitable room-control arrangements.
Player to a single remote screen
Carry digital menus, promotions or informational content from a protected equipment location to one display. For multiple screens, add the correct distribution architecture rather than splitting the HDBT link.
Control room to bar or restaurant TV
Use existing structured cabling where it meets the required category, length and termination standard. The included IR parts can return compatible remote-control commands.
Equipment cabinet to television
Useful where the set-top box, console or player is stored away from the screen. Choose it only when audio return is not needed—4KEX70-L does not support ARC or eARC.
NVR, PC or controller to one remote monitor
A direct wired option for a basic CCTV or control-room display path when 1080p/4K timing, HDCP, cable distance and control requirements match this model.
Choose 4KEX70-L when
- You need one HDMI source connected to one remote HDMI display.
- Your target is up to 4K@60Hz 4:2:0 8-bit at 40m, or 1080p@60Hz at 70m, using Cat6a/Cat7.
- You need CEC plus bidirectional IR and RS232 pass-through.
- You want to power the matched pair from either end with the single supplied adapter.
Choose a different solution when
- You require HDMI 2.0/18Gbps, 4K60 4:4:4, high-refresh gaming, or 8K.
- You need ARC/eARC, audio de-embedding, USB/KVM, Ethernet data or independent USB extension.
- You need one-to-many distribution, switching through a LAN switch, a video wall or matrix routing.
- Your cable run is longer than 40m for 4K or 70m for 1080p, or passes through several patch panels and couplers.
Is 4KEX70-L right for your installation?
Answer these four questions first. Open the advanced details only when you need exact formats or cable limits.
Four things to confirm
If your answer is “Yes” to all four, 4KEX70-L should suit the basic connection.
Choose 4KEX70-L for a simple, wired HDMI extension from one source to one display with optional IR, CEC or RS232 control.
What it works with
Computers, media players, set-top boxes, game consoles, disc players and AV receivers with a suitable HDMI output.
Connect one HDMI display that supports the resolution and colour setting selected on the source.
Cat6a/Cat7 gives the full range. Cat5e/Cat6 can be used over the shorter distances shown below.
Stereo and supported Dolby/DTS multichannel sound travel with the picture. ARC/eARC and separate audio output are not available.
Use the included IR parts for compatible infrared remotes. CEC can pass between devices when enabled.
RS232 passes in either direction for compatible control equipment using the supplied Phoenix connectors.
See resolution, cable and control details
| 4K@60Hz | Up to 4K@60Hz with 4:2:0 8-bit colour. For 4K@60Hz 4:4:4, choose an HDMI 2.0 or HDMI 2.1 extender. |
|---|---|
| 4K distance | Up to 40m with Cat6a/Cat7, or 35m with Cat5e/Cat6. |
| 1080p distance | Up to 70m with Cat6a/Cat7, or 60m with Cat5e/Cat6. |
| HDMI cable length | For 4K, keep the source-side HDMI cable within 10m and the display-side HDMI cable within 15m. |
| Cable wiring | Use one straight-through category cable with T568B wiring at both ends. Avoid flat cable and unnecessary couplers. |
| HDCP | Supports HDCP 2.2 for compatible protected streaming and disc content. |
| IR | Supports 30–50kHz infrared remotes. Bluetooth, RF and app-only controls cannot be carried through IR. |
| RS232 wiring | Connect TX to RX, RX to TX and GND to GND. Use the same serial settings on both devices. |
| Power | Connect the single supplied 18V/1A adapter to either the transmitter or receiver; it powers both units. |
- 4K@60Hz 4:4:4, HDMI 2.0/2.1 bandwidth, high-refresh gaming or 8K.
- ARC/eARC, separate audio output, USB or remote keyboard/mouse.
- More than one display, matrix switching, multiview or a video wall.
- Signal distribution through an Ethernet network switch.
- More than 40m at 4K or 70m at 1080p.
A quick final checklist.
Confirm these points before installing the cable.
Set it to 4K@60Hz 4:2:0, 4K@30Hz or 1080p according to your display and cable distance.
4KEX70-L is a one-source, one-display extender kit.
Measure the complete routed length, including service loops and short patch cables.
Both ends must use the same straight-through T568B pattern. Test the cable before final installation.
HDBT Out must connect directly to HDBT In. Do not use a router, LAN switch, PoE switch or injector.
Choose another model if the television must return sound or if you need a remote keyboard, mouse or webcam.
Inside the box
- 4KEX70-L transmitter
- 4KEX70-L receiver
- 18V/1A power adapter
- IR emitter and IR receiver
- 2 × RS232 Phoenix connectors
- User manual
You still need
- 1 × suitable Cat cable
- 2 × HDMI cables
- RS232 field cable, only if required
- Mounting and cable-management items for the installation
Bench-test the exact signal before the final cable pull.
Use the real source, display, HDMI leads and intended category cable. A successful short-cable test does not prove that an installed route at the maximum length will pass the same 4K format.
Set the target mode
Confirm the source can output a supported format—up to 4K60 4:2:0 8-bit or 1080p60—and verify it directly with the display.
Prepare the category run
Terminate the dedicated cable straight-through T568B at both ends. Check wire-map, length, damage and every patch point.
Connect TX and RX
HDMI source goes to the transmitter; HDBT Out runs directly to HDBT In; receiver HDMI Out goes to the display.
Choose the power end
Connect the supplied 18V/1A adapter to either TX or RX. Bidirectional power energises the matched unit at the opposite end.
Add control signals
For IR, connect receiver to IR In and emitter to IR Out at opposite ends. For RS232, cross TX/RX and match baud rate and other serial settings.
Validate before fixing
Check Power, Status, Link and HDCP LEDs; then test video, audio, CEC, IR and RS232 before closing walls, ceilings or equipment racks.
If Link is off or blinking
Check total length and T568B termination, remove couplers/patch points, avoid flat cable and try a known-good category run. If Link is solid but video is absent, test both HDMI leads directly and set the source to 4K30, 4K60 4:2:0 8-bit or 1080p.
4KEX70-L technical reference.
| System design | Point-to-point HDBaseT Lite transmitter and receiver pair |
|---|---|
| Video interface | HDMI 1.4, HDCP 2.2, maximum data rate 10.2Gbps |
| Maximum video | Up to 3840×2160 or 4096×2160 at 60Hz using 4:2:0 8-bit chroma subsampling |
| Other video formats | 4K up to 30Hz 4:4:4 plus common SMPTE/VESA modes through 1920×1200, when supported by the source and display |
| Cat6a/Cat7 distance | Up to 40m/131ft at 4K60 4:2:0; up to 70m/230ft at 1080p60 |
| Cat5e/Cat6 distance | Up to 35m/115ft at 4K60 4:2:0; up to 60m/197ft at 1080p60 |
| Category termination | Dedicated straight-through T568B cable between HDBT Out and HDBT In |
| HDMI cable guidance | 1080p60: up to 15m; 4K30 4:4:4 / 4K60 4:2:0: HDMI input up to 10m and output up to 15m |
| Audio | Stereo; PCM 2.1/5.1/7.1; supported DTS and Dolby formats passed within HDMI |
| IR | Bidirectional IR pass-through; included emitter and 30–50kHz receiver |
| Serial control | Bidirectional RS232 pass-through via 3-pin Phoenix connectors |
| CEC | HDMI CEC pass-through |
| ARC / eARC | Not supported |
| USB / network data | Not supported; HDBT RJ45 ports are not Ethernet LAN ports |
| Power | Bidirectional power between TX/RX; 1 × DC 18V/1A adapter; pair consumption up to 8.88W |
| Operating environment | 0°C to 45°C; 10%–90% humidity, non-condensing |
| Protection | ESD ±8kV air / ±4kV contact; surge protection ±1kV |
| Dimensions | Each unit: 108.8 × 15 × 64.2mm |
| Weight | TX/RX: 0.18kg each |
Important buying and setup answers.
Can I connect the HDBT cable through a network switch?
No. Connect the transmitter directly to the receiver over a dedicated category cable. The RJ45-shaped HDBT ports are not Ethernet ports and must not be connected to a router, LAN switch, PoE switch or injector.
Does 4K60 mean full 4:4:4 colour?
No. On 4KEX70-L, 4K50/60 is limited to 4:2:0 8-bit within the HDMI 1.4 / 10.2Gbps design. Use a suitable HDMI 2.0 or 2.1 extender when 4K60 4:4:4, deeper colour or higher bandwidth is mandatory.
Is the maximum distance 70m for 4K?
No. With Cat6a or Cat7, use up to 40m for 4K@60Hz 4:2:0 or 70m for 1080p@60Hz. With Cat5e or Cat6, use up to 35m for 4K or 60m for 1080p.
Can I distribute one source to several displays?
No. The supplied transmitter and receiver form a one-to-one pair. Use an HDMI splitter before suitable extender links, a matrix, or an AV-over-IP system designed for several displays for multi-display distribution.
Does it support ARC or eARC from the television?
No. Embedded audio travels with the forward HDMI signal, but 4KEX70-L does not provide ARC/eARC audio return or a separate audio output.
Can it extend keyboard, mouse or other USB devices?
No. This is an HDMI/audio/control extender, not a USB or KVM extender. Select a KVM/USB model when remote peripherals are required.
Why is only one power adapter included?
The matched pair supports bidirectional power. Connect the supplied 18V/1A adapter at either TX or RX and the other unit is powered over the HDBT link.
Will IR work with a Bluetooth voice remote?
Only the infrared portion of a compatible 30–50kHz remote can be relayed. Bluetooth, RF and app-based commands are not converted to IR. Place the emitter directly over the controlled device’s IR sensor.
What should I check first when there is no picture?
Verify Power/Status/Link/HDCP indicators, test both HDMI leads directly, confirm the display input, and set the source to a supported mode. If Link is unstable, inspect cable length and T568B termination and remove patch points.
Can I use existing Cat5e cable?
Yes, up to 35m at 4K@60Hz 4:2:0 or 60m at 1080p@60Hz. Use Cat6a or Cat7 for the full 40m/70m range. Existing wiring should be tested with the actual source and display.
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