
1
Installation Guide
AT-OME-EX-WP-KIT-LT
Omega
™
4K/UHD
Wallplate HDBaseT TX/RX for HDMI with USB
AT-OME-EX-WP-KIT-LT
The Atlona AT-OME-EX-WP-KIT-LT is an HDBaseT extender for video up to 4K/60 4:2:0, plus
embedded audio, control, and USB over distances up to 130 feet (40 meters) for 4K/UHD, and
up to 230 feet (70 meters) for 1080p/60 video. The transmitter features a US one-gang, wallplate
form factor, and includes interchangeable black and white wallplates and faceplates. Part of the
Omega™ Series of integration products for modern AV communications and collaboration, the
OME-EX-WP-KIT-LT is HDCP 2.2 compliant and extends RS-232 control signals. The integrated
USB extension addresses the challenge of connecting between USB devices at remote locations,
and is ideal for software video conferencing and touch or interactive displays. The transmitter
includes a USB 2.0 host interface for a PC, plus a peripheral device such as a speakerphone,
microphone, or keyboard and mouse. The receiver provides two USB interfaces for devices such
as a camera, soundbar, or display.
IMPORTANT: Visit http://www.atlona.com/product/AT-OME-EX-WP-KIT-LT for
the latest rmware updates and User Manual.
1 x AT-OME-EX-TX-WP-LT
1 x White faceplate
1 x White RS-232 cover
1 x White wallplate
1 x Black faceplate
1 x Black RS-232 cover
1 x Black wallplate
4 x Mounting screws (2x course thread, 2x ne
thread)
1 x 3-pin captive screw connector
1 x Installation Guide
1 x AT-OME-EX-RX-LT
1 x 4-pin captive screw connector
2 x Mounting plates
4 x Mounting screws
1 x 48 V DC power supply
Package Contents

2
Installation Guide
AT-OME-EX-WP-KIT-LT
HDBaseT
OUT
LINK
PWR
HDMI DEVICE HOST
RX TX
RS-232
AT-OME-EX-TX-WP-LT
HDBaseT
OUT
LINK
PWR
HDMI DEVICE HOST
RX TX
RS-232
AT-OME-EX-TX-WP-LT
1
7
3
2
4
6
5
1 HOST
Connect a USB cable from the computer
to this port.
2 RS-232
Connect an RS-232 control system to this
port. Connect the included 3-pin captive
screw connector to this receptacle. Refer
to AT-OME-EX-TX-WP-LT RS-232 (page
4) for more information. Note that this
port is covered by a plate and must be
removed to expose the RS-232 port.
3 DEVICE
Connect a USB device, such as a
speakerphone, to this port. This port
provides 2.5 W of power.
4 PWR
This LED indicator glows solid green when
the unit is powered. Refer to AT-OME-EX-
TX-WP-LT LED Indicators (page 8) for
more information.
5 HDMI
Connect an HDMI cable from this port to a
UHD/HD source.
6 LINK
This LED indicator glows solid amber to
indicate that the HDBaseT signal integrity
is good. Refer to AT-OME-EX-TX-WP-
LT LED Indicators (page 8) for more
information.
7 HDBaseT OUT
Connect a category cable from this port
to the HDBaseT IN port of the AT-OME-
EX-RX-LT.
AT-OME-EX-TX-WP-LT
Front Rear

3
Installation Guide
AT-OME-EX-WP-KIT-LT
FWHOST
OMEGA
TM
DEVICE
PWR
LINK
FW
OMEGA
TM
DEVICE
PWR
LINK
HDMI OUTHDBaseT IN
RX TXTX
RS-232 IR
AT-OME-EX-RX-LT
DC 48V
-
+
AT-OME-EX-TX-LT
HDMI INHDBaseT OUT
RX RXTX
RS-232 IRTEST
FWHOST
OMEGA
TM
DEVICE
PWR
LINK
FW
OMEGA
TM
DEVICE
PWR
LINK
HDMI OUTHDBaseT IN
RX TXTX
RS-232 IR
AT-OME-EX-RX-LT
DC 48V
-
+
AT-OME-EX-TX-LT
HDMI INHDBaseT OUT
RX RXTX
RS-232 IRTEST
1 DEVICE
Connect up to two USB 2.0 devices (e.g. mouse, keyboard, etc.) to these ports.
These ports provide 2.5 W per USB device.
2 FW
Not used. When updating the AT-OME-EX-TX-WP-LT, the AT-OME-EX-RX-LT will also be
updated. Note that both units must be connected using the HDBaseT ports.
3 PWR / LINK
The PWR LED indicator will glow green when the AT-OME-EX-RX-LT is powered. The LINK
LED indicator glows yellow when a solid link is established between the AT-OME-EX-TX-
WP-LT and AT-OME-EX-RX-LT. Refer to AT-OME-EX-RX-LT LED Indicators (page 9) for
more information.
4 DC 48V
Connect the included 2-pin captive screw connector from this receptacle to the power
supply. This connection supplies power to the AT-OME-EX-TX-WP-LT. Refer to AT-OME-
EX-RX-LT Power (page 5) for more information.
5 RS-232 / IR
Connect the included 4-pin captive screw connector to this receptacle. Refer to AT-OME-
EX-RX-LT RS-232 and IR (page 5) for more information.
6 HDBaseT IN
Connect a category cable from this port to the HDBaseT OUT port of the AT-OME-EX-TX-
WP-LT. The AT-OME-EX-TX-WP-LT is powered by the AT-OME-EX-RX-LT over HDBaseT.
7 HDMI OUT
Connect an HDMI cable from this port to the display (sink) device.
AT-OME-EX-RX-LT
Front
Rear
7
54 6
1
2 3

4
Installation Guide
AT-OME-EX-WP-KIT-LT
2. Use wire strippers to remove a portion of the RS-232 cable jacket.
3. Remove at least 3/16” (5 mm) from the insulation of the RX, TX, and GND wires.
4. Insert the TX, RX, and GND wires into correct terminal using the included 3-pin captive
screw connector.
5. Connect the opposite end of the cable to the control system.
NOTE: Typical DE-9 connectors use pin 2 for TX, pin 3 for RX, and pin 5 for
ground. On some devices functions of pins 2 and 3 are reversed.
AT-OME-EX-TX-WP-LT RS-232
GND
RX
TX
DE-9 (RS-232) port
The AT-OME-EX-TX-WP-LT provides an RS-232 port which allows communication between a
control system and an RS-232 device. This step is optional.
1. Gently remove the RS-232 cover from the faceplate using the tip of a small regular
screwdriver.
LINK
PWR
HDMI DEVICE HOST
RX TX
RS-232
AT-OME-EX-TX-WP-LT
LINK
PWR
HDMI DEVICE HOST
RX TX
RS-232
AT-OME-EX-TX-WP-LT
RS-232 cover

5
Installation Guide
AT-OME-EX-WP-KIT-LT
The AT-OME-EX-RX-LT provides pass-through transport of RS-232 protocol and/or IR over
HDBaseT, which allows communication between a control system and an RS-232 or IR device.
This step is optional.
1. Use wire strippers to remove a portion of the cable jacket.
2. Remove at least 3/16” (5 mm) from the insulation of the RX, TX, and GND wires for the
RS-232 connection.
3. Insert the TX, RX, and GND wires into correct terminal using one of the included 4-pin
captive screw connectors.
4. Repeat step 2 for the S and GND wires for the IR connection.
5. Insert the S (signal) wire in to the TX terminal and the ground wire to the GND terminal.
6. Tighten the captive screws to secure the wires in place. Do not over-tighten or use
high-torque devices to prevent damage to the connector.
NOTE: Typical DE-9 connectors use pin 2 for TX, pin 3 for RX, and pin 5 for
ground. On some devices functions of pins 2 and 3 are reversed. Note that the
signal (S) pin for the IR is labeled as “TX” on the port.
GND
to control system
or AT-VCC-IR-KIT
DE-9 (RS-232) port
RX
TX
S
GND
AT-OME-EX-RX-LT RS-232 and IR
AT-OME-EX-RX-LT Power
1. Locate the included orange captive-screw connector, and loosen the screws to allow room
to insert the copper wiring.
2. Wire the included power supply to the connector, as shown below. Do not use high-torque
devices, when securing the wires to the captive-screw connector, as this may damage the
screws and/or connector.
White
Black
48 V DC
power supply

6
Installation Guide
AT-OME-EX-WP-KIT-LT
Faceplate Removal and Assembly
1. Unscrew the four Phillips-head screws from the sides of the faceplate, as shown:
2. Gently remove the faceplate by pulling it away from the enclosure.
3. Attach the new faceplate, then secure it using the four Phillips-head screws. Do not over-
tighten or apply high-torque devices to the screws. Doing so may damage the faceplate
and/or the screws.
4. Install the AT-OME-EX-TX-WP-LT into the electrical box or mud ring.
5. Reattach the wallplate.
Removal of the faceplate requires that the AT-OME-EX-TX-WP-LT be disassembled from the
electrical box or mud ring. A small Phillips-head screwdriver is required to remove the faceplate.
LINK
PWR
HDMI DEVICE HOST
RX TX
RS-232
AT-OME-EX-TX-WP-LT

7
Installation Guide
AT-OME-EX-WP-KIT-LT
1. Connect a category cable, from the HDBaseT OUT port on the rear of the AT-OME-EX-TX-
WP-LT, to the HDBaseT IN port on the AT-OME-EX-RX-LT.
1. Connect a UHD/HD display to the HDMI OUT port.
2. Connect up to two USB devices (mouse, keyboard, etc.) to the DEVICE ports. These ports
provide 2.5 W per USB device.
3. OPTIONAL: Connect the RS-232 device to the RS-232 port on the AT-OME-EX-RX-LT.
Refer to AT-OME-EX-RX-LT RS-232 and IR (page 5) for more information.
4. OPTIONAL: Connect an IR emitter to the IR port on the transmitter. Connect an IR receiver
to the IR port on the AT-OME-EX-RX-LT. Refer to AT-OME-EX-RX-LT RS-232 and IR (page
5) for more information.
5. Connect the included 48 V DC power supply to the DC 48V power receptacle on the AT-
OME-EX-RX-LT.
6. Connect the power supply to an available AC outlet.
Installation
AT-OME-EX-TX-WP-LT
AT-OME-EX-RX-LT
Cable Max. Distance @ 4K Max. Distance @ 1080p
CAT5e / CAT6 115 feet (35 meters) 200 feet (60 meters)
CAT6a / CAT7 130 feet (40 meters) 230 feet (70 meters)
IMPORTANT: Stranded or patch cables are not recommended due to
performance issues.
2. Connect an HDMI cable from the UHD/HD source to the HDMI port.
3. OPTIONAL: Connect a USB cable from the host computer to the HOST port.
4. OPTIONAL: Connect a USB device, such as a speakerphone to the DEVICE port. This port
provide 2.5 W of power to USB devices.
5. OPTIONAL: Connect an RS-232 cable between a control system and the RS-232 port on
the AT-OME-EX-TX-WP-LT. Refer to AT-OME-EX-TX-WP-LT RS-232 (page 4) for more
information.
*Atlona recommends TIA/EIA 568-B termination for optimal performance.

8
Installation Guide
AT-OME-EX-WP-KIT-LT
The PWR and LINK LED indicator provide basic information on the current status of the AT-
OME-EX-TX-WP-LT.
AT-OME-EX-TX-WP-LT LED Indicators
PWR Description
Solid green Unit is powered. Normal operating mode.
Blinking green Unit is in rmware update mode. Refer to Updating the AT-OME-
EX-TX-WP-LT Firmware (page 12) for more information.
O Unit is not powered.
• Make sure that the category cable between the HDBaseT
IN port on the AT-OME-EX-TX-WP-LT and the HDBaseT
OUT port on the AT-OME-EX-RX-LT is secure.
• Make sure that the power supply, on the AT-OME-EX-RX-
LT, is connected to an active AC outlet.
LINK Description
Solid amber The link integrity between the AT-OME-EX-TX-WP-LT and the
AT-OME-EX-RX-LT is good.
Blinking amber Poor signal integrity between the AT-OME-EX-TX-WP-LT and the
AT-OME-EX-RX-LT.
• Make sure that the category cable between the HDBaseT
IN port on the AT-OME-EX-TX-WP-LT and the HDBaseT
OUT port on the AT-OME-EX-RX-LT is secure.
• The category cable may be compromised. Try using a
dierent category cable. Make sure that the cable is solid
core. Stranded or patch cables are not recommended.
O The link integrity between the AT-OME-EX-TX-WP-LT and the
AT-OME-EX-RX-LT is compromised.
• Check the category cable between the HDBaseT IN port
on the AT-OME-EX-TX-WP-LT and the HDBaseT OUT port
on the AT-OME-EX-RX-LT.

9
Installation Guide
AT-OME-EX-WP-KIT-LT
PWR Description
Solid green AT-OME-EX-RX-LT is powered.
O AT-OME-EX-RX-LT is not powered.
• Verify that the locking connector is securely fastened to the
power receptacle.
• Make sure that the power supply is connected to an active
AC outlet.
The PWR and LINK LED indicator provide basic information on the current status of the AT-
OME-EX-RX-LT.
AT-OME-EX-RX-LT LED Indicators
LINK Description
Solid yellow The link integrity between the AT-OME-EX-TX-WP-LT and the
AT-OME-EX-RX-LT is good.
Blinking yellow Poor signal integrity between the AT-OME-EX-TX-WP-LT and the
AT-OME-EX-RX-LT.
• Make sure that the category cable between the HDBaseT
IN port on the AT-OME-EX-TX-WP-LT and the HDBaseT
OUT port on the AT-OME-EX-RX-LT is secure.
• The category cable may be compromised. Try using a
dierent category cable. Make sure that the cable is solid
core. Stranded or patch cables are not recommended.
O The link integrity between the AT-OME-EX-TX-WP-LT and the
AT-OME-EX-RX-LT is compromised.
• Check the category cable between the HDBaseT IN port
on the AT-OME-EX-TX-WP-LT and the HDBaseT OUT port
on the AT-OME-EX-RX-LT.

10
Installation Guide
AT-OME-EX-WP-KIT-LT
The AT-OME-EX-RX-LT provides two mounting brackets, which can be used to attach the AT-
OME-EX-RX-LT to any at surface. Use the two enclosure screws, on the sides of the AT-OME-
EX-RX-LT to attach the mounting brackets.
1. Using a small Phillips screwdriver, remove the two screws from the left side of the
enclosure.
2. Position one of the mounting brackets, as shown below, aligning the holes on the side of the
enclosure with one set of holes on the mounting bracket.
3. Use the screws from Step 1 to attach the mounting bracket.
Mounting Instructions
FW
OMEGA
TM
DEVICE
PWR
LINK
FW
OMEGA
TM
DEVICE
PWR
LINK

11
Installation Guide
AT-OME-EX-WP-KIT-LT
4. Repeat these steps to attach the second mounting bracket to the opposite side of the AT-
OME-EX-RX-LT.
5. Mount the AT-OME-EX-RX-LT to a at surface using the oval-shaped holes, on each
mounting bracket. If using a drywall surface, a #6 drywall screw is recommended.
FW
OMEGA
TM
DEVICE
PWR
LINK

12
Installation Guide
AT-OME-EX-WP-KIT-LT
Updating the Firmware
Requirements:
• AT-OME-EX-TX-WP-LT
• AT-OME-EX-RX-LT
• Firmware le
• Computer running Windows
• USB-A to USB-B cable
• USB Firmware Update Tool
1. Disconnect power from the unit, which can be done by disconnecting the category cable
from the HDBaseT port on the receiver.
2. Remove the faceplate to access the hidden “rmware update” button, located above the
PWR LED indicator.
3. Connect a USB cable from the HOST port on the AT-OME-EX-TX-WP-LT to a PC, using a
USB-A to USB-B cable.
4. Simultaneously press and hold the rmware update button, while reconnecting the power.
The PWR LED indicator will be blinking green.
5. If a USB UPDATE folder is opened automatically, notate the drive letter and close the folder.
6. Launch the USB Update Tool.
7. The drive letter of the mounted drive for the unit will be displayed in the Disk Drive eld.
If it is not, click the Refresh button.
IMPORTANT: The AT-OME-EX-WP-KIT-LT should be updated as a kit,
and the TX and RX should be connected via their HDBaseT connectors
prior to the rmware update.
Mounted drive letter Refresh button

13
Installation Guide
AT-OME-EX-WP-KIT-LT
8. Click the Browse button and select the rmware le. Once the rmware le is selected, it
will appear in the Firmware File eld. If the rmware le is not displayed in this eld, click
the Refresh button.
9. Click the Update Firmware button.
10. The rmware update process will begin and will be monitored by a progress bar.
Firmware file
Browse button
Update Firmware button
IMPORTANT: Do not disconnect power from the unit while performing
the rmware update procedure.
Progress bar

14
Installation Guide
AT-OME-EX-WP-KIT-LT
11. After the update process has completed, the Copy process completed message will be
displayed in the message window.
The PWR LED indicator, on the front panel, will ash green while the unit is being updated.
Do not disconnect the USB cable during the update process. When the PWR LED stops
ashing and is solid green, the update process will be complete.
12. Repeat the above steps if upgrading from rmware 1.2.2 to 1.2.4.

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Installation Guide
AT-OME-EX-WP-KIT-LT

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Installation Guide
AT-OME-EX-WP-KIT-LT
25297-R3
®
The terms HDMI, HDMI High-Denition Multimedia Interface, HDMI trade dress and the HDMI Logos are
trademarks or registered trademarks of HDMI Licensing Administrator, Inc.
© 2024 Atlona Inc. All rights reserved. “Atlona” and the Atlona logo are registered trademarks of Atlona Inc. All other brand names and trademarks or registered
trademarks are the property of their respective owners. Pricing, specications and availability subject to change without notice. Actual products, product images, and
online product images may vary from images shown here.
English Declaration of Conformity
The English version can be found under the resources tab at:
https://atlona.com/product/at-ome-ex-wp-kit-lt/.
Warranty
Chinese Declaration of Conformity 中国RoHS合格声明
To view the product warranty, use the following link or QR code:
https://atlona.com/warranty/.
由SKU列出於:
https://atlona.com/about-us/china-rohs/.
US International
atlona.com • 408.962.0515 • 41.43.508.4321
