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LG 55PK640S0LB

55-inch 4K UHD (3,840×2,160) professional TV signage with webOS 25, built-in Wi-Fi, embedded content management, and 16-7 duty-cycle rating for commercial environments.

  • 4K UHD resolution (3,840×2,160) with HDR10 Pro and HLG for vivid, true-to-life content
  • Embedded webOS 25 platform with built-in content and group manager — no external player required
  • Built-in Wi-Fi 5 (802.11ac) and Bluetooth enable wireless streaming, screen sharing, and BLE beacon promotions
  • Functions as a wireless access point so nearby mobile devices can connect through the display
  • Failover support and Crestron certification ensure reliable integration into professional AV setups
  • Compatible with LG SuperSign CMS and ConnectedCare for centralised content and remote management
  • SKU:8806096558799
  • GTIN:8806096558799
  • MPN:55PK640S0LB

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BRIGHTNESS300 nitsTypical
RUNTIME16-724 h x 7 days
VESA MOUNT200×300 mmVESA
ORIENTAIONLandscapeMounting
BEZEL WIDTH8.2 / 8.2 / 8.2 / 17.5 mmL / R / T / B (on)

55-inch 4K UHD professional TV signage

LG 55PK640S0LB

The LG 55PK640S0LB is a 55-inch 4K UHD TV Signage display designed for commercial deployments across retail, hospitality, corporate lobbies, and quick-service restaurants. Built on the webOS 25 smart signage platform with a Quad-core SoC, it runs standalone without an external media player, handling content scheduling, group management, and remote monitoring entirely on-device. With built-in Wi-Fi 5 (802.11ac), Bluetooth, LAN, and a full suite of vertical signage functions — including failover, URL playback, Crestron compatibility, and BEACON support — it integrates cleanly into both simple and complex signage architectures. Its slim form factor and 16-hours-per-day, 7-days-a-week duty rating make it a reliable, installation-friendly choice for continuous business use.

Embedded webOS 25 — Standalone Signage

Embedded webOS 25 — Standalone Signage

The 55PK640S0LB runs LG's webOS 25 platform on a Quad-core SoC (K25Lp), meaning the display operates as a fully self-contained signage player with no external media box required. The upgraded SoC and web engine deliver smooth multitasking — web browsing, app execution, and signage content run concurrently without stuttering. For users managing a store or venue, this translates to a simpler, tidier installation (no extra boxes, cables, or remote controls), lower total cost of ownership, and fewer potential failure points to troubleshoot over time.

Embedded Content and Group Management

Embedded Content and Group Management

Without any external software or PC, operators can build playlists, set time schedules, and organise displays into master-and-group hierarchies — all controlled via remote control, mouse, or mobile phone. This embedded Content and Group Management System is especially practical in small-to-medium retail or hospitality settings where IT support is limited. Staff can update promotional content or swap a schedule directly on the display, reducing dependency on centralised IT and keeping displays current with minimal effort.

4K UHD. webOS 25. No external player needed.

16-7 rated · CE certified · Up to 30,000 hrs backlight life

Real-Time BLE Promotions via BEACON

Real-Time BLE Promotions via BEACON

The PK640S0LB features a built-in Bluetooth Low Energy BEACON transmitter (supporting both iBeacon and Eddystone protocols). In retail environments, this allows the display to push coupons, product information, or loyalty offers directly to nearby shoppers' smartphones — without any additional hardware. The beacon operates passively alongside normal signage content, turning the screen into an active engagement tool rather than a passive display, which can meaningfully increase customer interaction at the point of sale.

Wireless Access Point — Built-In Soft AP

Wireless Access Point — Built-In Soft AP

Beyond Wi-Fi content streaming, the PK640S series can operate as a virtual router (Soft AP), acting as a wireless access point for mobile devices in the vicinity. This means a standalone display in a pop-up shop, event space, or kiosk area can simultaneously deliver its own Wi-Fi network to customers — without needing a separate router. For temporary or low-infrastructure installations, this eliminates an additional network device from the bill of materials while still providing connectivity for both the display and end-user devices.

Failover for Uninterrupted Playback

Failover for Uninterrupted Playback

The display supports automatic Failover, switching to a backup source if the primary input signal is lost. In a live-event environment, menu board, or lobby installation where downtime is visible and costly, this ensures the screen never goes dark unexpectedly. Combined with Play via URL and an embedded media player, operators can configure a robust content chain where network-streamed content falls back to locally stored content automatically — keeping the display productive even if connectivity drops.

LG ConnectedCare Remote Monitoring

LG ConnectedCare Remote Monitoring

The 55PK640S0LB is compatible with LG ConnectedCare, an optional cloud-based management service that remotely monitors display health, diagnoses faults, and enables remote control across a fleet of displays. For multi-site operators — such as retail chains or hotel groups — this means issues can be identified and often resolved without dispatching a technician, reducing service costs and shortening any period where a display is underperforming. ConnectedCare is purchased separately and availability varies by region.

HDR10 Pro and HLG — Elevated Picture Quality

HDR10 Pro and HLG — Elevated Picture Quality

Support for both HDR10 Pro and Hybrid Log-Gamma (HLG) means the display can render high dynamic range content from a wide range of broadcast, streaming, and locally stored sources. In retail and hospitality settings where premium brand imagery or video menus are displayed, the improved contrast depth and colour volume make content look noticeably more vibrant and professional compared to standard SDR output — without any manual adjustment needed by the operator.

Crestron Certified — AV System Integration

Crestron Certified — AV System Integration

The 55PK640S0LB carries Crestron compatibility certification, meaning it integrates natively into Crestron-controlled AV environments without custom programming workarounds. For corporate, education, or hospitality installations where room control systems manage displays, lighting, and AV switching from a single controller, this pre-certified compatibility reduces integration risk, shortens commissioning time, and gives AV integrators confidence the display will behave predictably in the control ecosystem.

Display
Display diagonal
139.7 cm (55")
Display technology
LED
LED backlighting type
Direct-LED
Display resolution
3840 x 2160 pixels
Display brightness
300 cd/m²
HD type
4K Ultra HD
Touchscreen
No
Response time
8 ms
Contrast ratio (typical)
1200:1
Contrast ratio (dynamic)
1000000:1
High Dynamic Range (HDR) technology
High Dynamic Range 10 Pro (HDR10 Pro), Hybrid Log-Gamma (HLG)
High Dynamic Range (HDR) supported
Yes
Native refresh rate
60 Hz
Ports & interfaces
USB port
Yes
Ethernet LAN
Yes
Ethernet LAN (RJ-45) ports
1
Wi-Fi
Yes
Number of antenna connectors
1
RS-232C
Yes
Audio
Built-in speaker(s)
Yes
Number of built-in speakers
2
Audio output channels
2.0 channels
RMS rated power
10 W
Design
Product design
Digital signage flat panel
Product colour
Black
Placement supported
Indoor
Performance
Purpose
Universal
Analog signal format system
ATSC, NTSC, SECAM, PAL
Digital signal format system
DVB-C, DVB-CI, DVB-S2, DVB-T2
Operating hours (hours/days)
16/7
Global-IPTV support
Yes
Web browser
Yes
Power
Power consumption (typical)
113 W
Power consumption (max)
136 W
Input voltage
100 - 240 V
Power consumption (standby)
0.5 W
Energy efficiency class (SDR)
F
Energy efficiency class (HDR)
G
Energy consumption (SDR) per 1000 hours
72 kWh
Energy consumption (HDR) per 1000 hours
110 kWh
Energy efficiency scale
A to G
Computer system
Operating system installed
WebOS
Operating system version
25
Weight & dimensions
Display width
1226 mm
Display depth
59.8 mm
Display height
711 mm
Display weight
10.2 kg
Width (with stand)
1226 mm
Depth (with stand)
275 mm
Height (with stand)
766 mm
Weight (with stand)
10.4 kg
Packaging data
Package width
13800 mm
Package depth
118 mm
Package height
830 mm
Package weight
13.7 kg
Packaging content
Stand included
Yes
Remote control included
Yes
Remote control type
L-con AKB75095376
Cables included
AC, RS-232
Technical details
Compliance certificates
Federal Communications Commission (FCC), UL