4K60Hz HDMI CAT Transmitter expandable to up to 250 Displays, SC&T HE03T-4K6G
Note: This is only the HE03T-4K6G transmitter. For operation, an HE03R-4K6G (with 1:1 extension) or several HE03R-4K6G receivers connected (via a managed LAN switch) are required for distribution.
The HE03R-4K6G is connected to one of the 2 x RJ45 out of an also available HE03LR-4K6G, the transmitter HE03T-4K6G or a GB switch.
The 4K6G system is not compatible with the HE03-4K system (without 6G).
HE03 4K6G is a 4K60Hz extender that can use a cost effective Ethernet cable to send the signal for up to 100M with resolution up to 4K@ 60 Hz 4:4:4. The built in EDID button can automatically find the connected HDMI monitor's best resolution and correctly display wanted video. The extender applies AV over IP technology that allow itself to work with Ethernet sw itches to split an HDMI to multiple ones, which can display one HDMI source on multiple displays at the same time.
HE03-4K6G Features
- Resolution up to 4K6 0Hz 4:4:4.
- Signal extension up to 100 M.
- Built in local loop out for an extra HDMI display at TX side.
- Supports audio extraction for microphones, headphones or speakers.
- Supports RS232 transmission and EDID management.
- Supports IR passthrough.
- Workable with SR01X (IP repeater) for longer distance.
- Workable with Ethernet switch for signal distribution.
Application Diagram
Point to Point application

Point to Multiple Points through network switch application
Note: in this application, auxiliary audio and IR are also supported.
I/O Interface
HE03T-4K6G
Item |
Interface |
Description |
1 |
RJ45 Connector |
To connect HE03R-4K6G/ HE03LR-4K6G |
2 |
HDMI IN |
To connect a HDMI source |
3 |
HDMI LOOPOUT |
To connect a HDMI display |
4 |
Power Supply |
To plug in DC 5V power adapter |
5 |
Button |
To select EDID |
6 |
DIP Switch |
EDID & RS232 Settings |
7 |
RS232 |
FW update (needs 3.5mm jack cable to RS232) |
8 |
IR Tx |
To connect an IR emitter |
9 |
Power/LINK |
To indicate the status of Power and LINK |
HE03R-4K6G
Item |
Interface |
Description |
1 |
RJ45 Connector |
To connect HE03T-4K6G |
2 |
HDMI OUT |
To connect a HDMI display |
3 |
Power Supply |
To plug in DC 5V power adapter |
4 |
Button |
Mode & Select button for additional settings |
5 |
DIP Switch |
RS232 settings |
6 |
RS232 |
FW update (needs 3.5mm jack cable to RS232) |
7 |
IR Rx |
To connect a 3.5mm jack for an IR receiver |
8 |
Audio Output Interface |
To use an audio cable to connect with speakers or an amplifier (refer to audio connection) |
9 |
Power/LINK |
To indicate the status of Power and LINK |
Package Includes
Item |
Amount |
HE03T-4K6G (Transmitter) |
1 pc |
HE03R-4K6G (Receiver) |
1 pc |
DC 5V2A Power Adapter |
2 pcs |
IR Emitter Cable |
1 pcs |
Technical Specification
|
HE03-4K6G
|
HE03T-4K6G
|
HE03R-4K6G
|
|
Compliance |
Standard |
HDMI 2.0
HDCP 2.2
USB 2.0/ 1.1/ 1.0 |
Max. Video Resolution |
4K@60Hz |
Max. Transmission Distance |
100M over CAT5e |
Audio Format |
Pass-through |
RS232 Baud Rate |
115200bps |
IR Support |
20-60Khz, ±45°, 5M |
20-60Khz, ±45°, 5M |
|
Ports & Interfaces |
|
Video Input |
1 x HDMI Type-A |
1 x RJ45 |
|
Video Output |
1 x RJ45 |
1 x HDMI Type-A |
Video Loop-out |
1 x HDMI Type A |
|
|
Analog Audio Output |
|
Terminal Block 5-Pin |
|
IR |
External Transmitter: 3.5mm Stereo Phone Jack: 20~60KHz / ±45° / 5M |
External Receiver: 3.5mm Stereo Phone Jack 20~60KHz / ±45° / 5M |
|
RS232 |
1 x 3.5mm Phone Jack |
1 x 3.5mm Phone Jack |
|
Power |
|
Power Supply |
5V 2A |
5V 2A |
|
Ambient Temperature |
|
Operation |
-20 to 70°C |
|
Storage |
-40 to 80°C |
|
Operating Altitude |
2000m |
|
Humidity |
Up to 95% |
Ordering Information
HE03-4K6G 4K60Hz HDMI over CAT Extender-Set (Transmitter HE03T-4K6G + Receiver HE03R-4K6G)
HUE03T-4K6G 4K60Hz HDMI+DP+USB-C Switching-Transmitter
HE03R-4K6G 4K60Hz HDMI over CAT Receiver (1 x HDMI out)
HE03LR-4K6G 4K60Hz HDMI over CAT Splitter 1-in/3-out (1 x of that is HDMI out)