LG 55EJ5K (Discontinued) · Replacements in Qatar

Name: LG 55EJ5K 55-inch Wallpaper OLED Signage Display
Brand: LG
SKU: lg-55ej5k
Availability: Discontinued

Overview

The LG 55EJ5K is a discontinued 55-inch wallpaper OLED signage display from the OLED EJ5 series, and the manufacturer no longer produces it. It is a Full HD self-lit OLED panel with an even 0.9mm bezel and a separate signage box, built for tiled video walls in lobbies, showrooms and corridors. Organisations that already run this model, or need a current equivalent, can request a quote from SmartRooms Qatar.

What this discontinued OLED panel is built to do

The LG 55EJ5K belongs to the OLED EJ5 range of wall-mounted signage displays. Each 55-inch unit is a thin Full HD OLED head connected to a separate signage box. LG has discontinued this model, so this page serves organisations that already own it, buyers comparing it with newer signage, and anyone seeking a replacement for an existing wall.

Picture and mechanical figures that matter on a wall

The panel has a 1920 x 1080 native resolution, a 120Hz refresh rate and a listed contrast ratio of 150,000:1 with BT709 120% colour gamut. Brightness is rated at 150 nits with a full white screen and 400 nits at a 25% average picture level. Each OLED pixel switches off individually, so dark areas stay black rather than glowing as they would on a backlit panel. Key measurements:

Head size 1220.3 x 696.8 x 4.9 mm, weighing 6.5 kg
Signage box size 782.8 x 238.4 x 34.7 mm, weighing 3.4 kg
Even bezel of 0.9 mm off-bezel, with on-bezel edges of 5.3 mm top, left and right and 11.0 mm at the bottom
Typical power draw 116 W and maximum 318 W on 100-240 V, 50/60 Hz

Installation planning: wall fixers, cabling and layout

Four wall fixers come in the box. They are driven into the wall first, then each head hangs on them from the front instead of sliding in from the side. Four supplied flexible cables, each 1600 mm long, link every head to its signage box and are pliable enough to embed in a wall. Plan the tile layout, box positions and cable route before the wall is finished, and confirm the wall can carry the head weight. SmartRooms Qatar offers a free site survey for these checks.

Control, networking and content software

Each display runs webOS 4.0 with 16 GB of internal storage and supports local content scheduling and USB plug-and-play playback. The LAN daisy chain lets an IT team send commands, monitor the displays and update firmware across the whole wall from one connection. Ports include an HDMI input with HDCP 1.4, DisplayPort in and out, two USB 2.0 ports and wired RJ45, RS232C and IR connections. Management software includes SuperSign CMS, SuperSign Control+ and Connected Care. There is no built-in Wi-Fi, speaker or touch, so connect it over wired LAN.

Where this 55-inch wall fits in Qatar

A bank branch in West Bay can use a 55-inch wall for wayfinding and promotions in a customer lobby, while a hotel reception in The Pearl can use one that sits flush with the interior design. A school or university in Education City or Al Rayyan can run a tiled corridor wall for timetables and campus news. The operating range is 0 °C to 40 °C with 10% to 80% humidity, so keep it in air-conditioned indoor spaces. Confirm conditions with the SmartRooms Qatar team before placing it near a window or entrance, where summer heat above 45 °C can exceed the rating.

Buying a discontinued model

Because LG no longer produces the 55EJ5K, check the exact model code, including the 55EJ5K-B variant, before ordering extra heads or spares. Ask SmartRooms Qatar to compare a current equivalent or compatible replacement against your existing wall before any expansion. We accept purchase orders (LPOs) and government tenders, including Monaqasat, and payment can be made by bank transfer, cheque or purchase order. Request a quote for the replacement you need and we usually respond within one working day.

Highlights

1920 x 1080 OLED panel with 120Hz refresh rate
150,000:1 contrast ratio and 0.9mm even off-bezel
Four wall fixers supplied for front-mounted tiling
LAN daisy chain for remote control and firmware updates
Built-in power: AC 100-240 V, 50/60 Hz, 116 W typical
Discontinued by LG; request a quote for a current equivalent

Plan your video wall

Rows3

Columns3

Wall size about 3.65 × 2.05 m · 9 panels

Estimated timeline

Quotation within 1 working day · delivery timing depends on stock availability, and we confirm it with your quotation.

Specifications

135 specifications · Source: manufacturer · checked Oct 2026

PANEL19

Screen Size (Inch): 55
Panel Technology: OLED
Back Light Type: OLED
Aspect Ratio: 16:9
Native Resolution: 1920 x 1080 (FHD)
Refresh Rate: 120Hz
Brightness: 150/400nit (APL 100%/25%)
Contrast Ratio: 150,000:1
Dynamic CR: NO
Color Gamut: BT709 120%
Viewing Angle (H x V): 178º x 178º
Color Depth (Number of Colors): 1.07 Billion colors
Response Time: 1ms (G to G), 8ms (MPRT)
Surface Treatment (Haze): Haze 0%
Life time: 30,000Hrs (Typ.)
Operation Hours (Hours/Day): 18/7 (Moving Content Only)
Portait / Landscape: YES / YES
Transparency: N/A
QWP (Quarter Wave Plate): N/A

CONNECTIVITY19

HDMI In: YES (1ea)
HDMI In (HDCP Ver.): 1.4
DP In: YES (HDCP 1.3)
DVI-D In: NO
RGB In: NO
Audio In: NO
RS232C In: YES
RJ45(LAN) In: YES (1ea)
IR In: YES
USB In: USB2.0 Type A (2ea)
HDMI Out: NO
DP Out: YES
Audio Out: YES
Touch USB: NO
External Speaker Out: NO
RS232C Out: YES
RJ45(LAN) Out: YES
IR Out: YES (Sharing RS232C Out)
Daisy Chain: Input : HDMI, DP / Output : DP

MECHANICAL SPECIFICATION10

Bezel Color: Black
Bezel Width: Even Bezel : 0.9mm (Off Bezel) T/R/L/B : 5.3/5.3/5.3/11.0mm (On Bezel)
Weight (Head): 6.5Kg (Head) 3.4Kg (Signage Box)
Weight (Head+Stand): N/A
Packed Weight: 23.1Kg
Monitor Dimensions (W x H x D): 1220.3 x 696.8 x 4.9mm (Head) 782.8 x 238.4 x 34.7mm (Signage Box)
Monitor Dimension with Stand (W x H x D): N/A
Carton Dimensions (W x H x D): 1345 x 804 x 207mm
Handle: NO
VESA Standard Mount Interface: N/A

FEATURE - HARDWARE13

Internal Memory (eMMC): 16GB
Wi-Fi/BT (Built-in): NO
Temperature Sensor: YES
Auto Brightness Sensor: NO
Pixel Sensor: NO
Proximity Sensor: NO
Current Sensor: NO
BLU Sensor: NO
Humidity Sensor: NO
Acceleration(Gyro) Sensor: NO
Power Indicator: NO
Local Key Operation: NO
FAN (Built-in): NO

FEATURE - SOFTWARE39

OS Ver. (webOS): webOS 4.0
Local Contents Scheduling: YES
Group Manager: YES
USB Plug & Play: YES
Fail over: YES
Booting Logo Image: NO
No Signal Image: NO
RS232C Sync: YES
Local Network Sync: YES
Backlight Sync: NO
PIP: NO
PBP: NO
Screen Share: NO
Video Tag: YES (4 Video Tag)
Play via URL: NO
Screen Rotation: YES
External Input Rotation: YES
Gapless Playback: YES
Tile Mode Setting: YES
Setting Data Cloning: YES
SNMP: YES
ISM Method: YES
Auto Set ID: YES
Status Mailing: YES
Control Manager: YES
Cisco Certification: NO
Crestron Connected: YES
Smart Energy Saving: NO
PM mode: YES
Wake on LAN: YES
Network Ready: NO
Beacon: NO
HDMI-CEC: YES
SI Server Setting: YES
webRTC: NO
Pro:Idiom: YES
Brightness Compensation: NO
W/B Setting by Grey scale: NO
Scan Inversion: YES

ENVIRONMENT CONDITIONS2

Operation Temperature: 0 °C to 40 °C
Operation Humidity: 10 % to 80 %

POWER2

Power Supply: AC 100-240V~, 50/60Hz
Power Type: Built-in Power

POWER CONSUMPTION6

Typ.: 116W (IEC 62087)
Max.: 318W
BTU (British Thermal Unit): 1054 BTU/Hr(Typ.), 1085 BTU/Hr(Max.)
Smart Energy Saving (70%): N/A
DPM: 0.5W
Power off: 0.5W

SOUND1

Speaker (Built-in): NO

CERTIFICATION4

Safety: CB / NRTL
EMC: FCC Class "A" / CE / KC
ERP / Energy Star: YES / NO
ePEAT(US only): NO

OPS COMPATIBILITY2

OPS Type compatible: N/A
OPS Power Built-in: N/A

SOFTWARE COMPATIBILITY7

SuperSign CMS: YES
SuperSign Control+: YES
SuperSign WB: YES
SuperSign Cloud: NO
Promota: NO
Mobile CMS: YES
Connected Care: YES

LANGUAGE1

OSD: English, French, German, Spanish, Italian, Korean, Chinese(Simplified), Chinese(Original), Portugues(Brazil), Swedish, Finnish, Norwegian, Danish, Russian, Japanese, Portugues(Europe), Dutch, Czech, Greek, Arabic

ACCESSORY2

Basic: Remote Controller(include battery 2ea), Power Cord, QSG, IR receiver, Regulation Book, Phone to RS232C Gender, FFC Cables(1600mmx4ea for connection between panel and Signage Box), DP Cable(2M), LAN Cable(1.5M), RS232 Cable(4P-4P,1.5M), LC Cable(VLC,3M), Wall Fixer(4ea), Wall Fixer Install Guide, Install Guide Sheet(2ea), Tape(10ea for Cabling / 2ea for Dust proof), Screw(M4xL25,10ea / M3xL5.5,8ea)
Optional: NO

SPECIAL FEATURE8

Overlay Touch Compatibility: N/A
Smart Calibration: N/A
Tilt (Face up): N/A
Tilt (Face down): N/A
IP Rating: N/A
Conformal Coating (Power Board): N/A
Power Protection: N/A
Direct Sunlight: N/A

Downloads

6 files from the manufacturer

PDF Datasheets EJ5K_Datasheet(low)_LG OLED Signage_230518_20230607_165327_.pdf 1.2 MB PDF Manuals & guides MFL71792723_00_221123.pdf 9.9 MB PDF Manuals & guides MFL71792731_01_250121_AU.pdf 4.6 MB PDF Manuals & guides · Opens on manufacturer site webOS4.0_UG_ENG.pdf 4.4 MB PDF Drawings & CAD 55EJ5K-B_2D_20220713_134617_.pdf 412 KB DWG Drawings & CAD · Opens on manufacturer site 55EJ5K_2D.dwg

Questions about 55EJ5K

Is the LG 55EJ5K still sold by LG?

No. LG has discontinued the 55EJ5K, so it is no longer in the manufacturer's range. If you need a unit that matches an existing wall, or a current wallpaper-style OLED signage display, request a quote. SmartRooms Qatar will compare suitable options against your wall size, cabling and content plan and confirm compatibility before you order.

What is this 55-inch OLED signage panel designed for?

It is built for indoor digital signage that needs a slim, dark-background look, such as a hotel lobby in The Pearl, a bank branch in West Bay or a showroom in Lusail. Its 1920 x 1080 OLED panel and 0.9 mm even bezel suit content viewed up close, like wayfinding, promotions and brand loops, rather than large public screens.

Can it be installed near a window or entrance in summer?

Only in an air-conditioned, indoor space. The listed operating temperature is 0 °C to 40 °C and operating humidity is 10% to 80%, while outdoor summer temperatures in Qatar can exceed 45 °C. Keep the panel away from direct sunlight and entrance draughts, and ask the SmartRooms Qatar team to confirm room conditions during the free site survey.

What picture quality does the 55EJ5K deliver?

The panel runs at 1920 x 1080 native resolution with a 120Hz refresh rate, a listed contrast ratio of 150,000:1 and a BT709 120% colour gamut. Brightness is 150 nits at full-screen white and 400 nits at 25% average picture level. Dark content stays black because each OLED pixel switches off on its own, which helps in a dimly lit lobby.

How do the bezels affect a video wall made from several panels?

The even bezel measures 0.9 mm off-bezel, while the on-bezel edges measure 5.3 mm on the top, left and right and 11.0 mm at the bottom. On a corridor wall in Education City, plan the bottom gap into your layout drawing before installation. The wall can be extended horizontally and vertically to fill the available space.

How are the panels mounted and what does installation involve?

Four wall fixers are supplied. They are driven into the wall first, then each head hangs on them from the front, instead of being slid in from the side. Installation planning should cover wall loading for the 6.5 kg head, the position of each 3.4 kg signage box and the cable route. SmartRooms Qatar offers professional installation and a free site survey.

How long are the cables between the panel and the signage box?

The supplied set includes four flexible FFC cables, each 1600 mm long, to link each head with its signage box. The cables are pliable enough to be embedded in a wall or other structure. Measure the distance between the head and the box position before ordering, and allow for any wall cavities or trunking along the route.

Which inputs and outputs does the panel offer?

It has one HDMI input (HDCP 1.4), one DisplayPort input (HDCP 1.3), a DisplayPort output for daisy chaining, two USB 2.0 Type A ports, RS232C, IR and RJ45 LAN in and out, and audio out. There is no HDMI output, DVI, RGB, audio input or touch USB. The panel has no built-in speakers and no Wi-Fi or Bluetooth.

Can an IT team manage a whole wall over the network?

Yes. The LAN daisy chain lets you send commands, monitor the displays and update firmware across the wall. The panel supports SNMP, Wake on LAN, Auto Set ID, status mailing and Crestron connectivity. Content can be managed through SuperSign CMS, SuperSign Control+, SuperSign WB, Mobile CMS and Connected Care, so a ministry or hospital IT team can keep control on its existing wired network.

How much power does the 55EJ5K draw?

The built-in power supply accepts AC 100-240 V at 50/60 Hz, which covers Qatar's 240 V mains. Typical consumption is 116 W and maximum is 318 W, about 1,054 BTU per hour typical. Power-off draw is 0.5 W. Use the maximum figure when sizing circuits and cooling for a wall of several panels in a reception area or control room.

Can a school order several panels on a purchase order?

Yes. SmartRooms Qatar accepts purchase orders (LPOs) and government tenders, including Monaqasat, and payment can be made by bank transfer, cheque or purchase order. A school in Al Khor or Al Wakrah fitting out a tiled corridor wall can send its bill of quantities with the LPO. Request a quote for the replacement you choose, and expect a response usually within one working day.

Does the on-screen menu support Arabic?

Yes. The on-screen display language list includes Arabic alongside English, French, German, Spanish, Chinese, Japanese and several other languages. Offices that work in Arabic and English side by side can set the menu language on each panel. Ask the SmartRooms Qatar team to confirm how Arabic text will appear in your content before installation.