The LG 55XS4P is a 55-inch high-brightness window-facing digital signage display engineered to deliver outstanding visibility and reliability in demanding storefront and retail environments. With an ultra-bright 4,000 nits (Typ.) panel, 24/7 operation, and advanced durability features such as anti-discolouration technology and conformal coating, the 55XS4P ensures your content remains vibrant and impactful, even in direct sunlight through glass. Powered by the webOS 6.0 smart signage platform and built for easy monitoring and control, it is an ideal solution for high-performance commercial digital signage deployments.

Note: The LG 55XS4P is the recommended replacement model for the LG 55XS4J, which has now reached end of life (EOL). 

Highlighted Features

• 4,000 nits High Brightness for Window-Facing Visibility: Designed specifically for storefront and window-facing installations, the LG 55XS4P delivers 4,000 nits (Typ.) brightness to keep content clear and eye-catching even under strong ambient light.
• Anti-Discolouration Technology (Reduced Screen Yellowing): Built to maintain image quality in sunlight-exposed environments, the display features advanced technology to help prevent discolouration and preserve long-term visual performance. 
• Optimised for Polarised Sunglasses Viewing: Window-facing content remains vibrant and readable even for passers-by wearing polarised sunglasses, ideal for retail streets and high-footfall areas.
• Smart Monitoring & Remote Control: Supports convenient remote monitoring and content management, helping teams manage changing promotions and information quickly and efficiently across multiple displays. 
• High Performance with webOS 6.0: The built-in Quad Core SoC and webOS 6.0 platform support smooth playback, multitasking, and streamlined content operations without an external media player.
• High Reliability with Conformal Coating: Conformal coating helps protect the internal circuit and power boards from dust, moisture, and contaminants, ideal for long-term operation in challenging environments. 
• Wide Operating Temperature for Commercial Use: Supports operation across a wide range of temperatures, helping ensure stable performance for window-facing signage deployments. 
• Portrait & Landscape Installation: Supports portrait and landscape orientation, offering flexible mounting and content layout options. 

Specifications

Screen Size	55"
Panel Technology	IPS, M+
Aspect Ratio	16:9
Native Resolution	1,920 × 1,080 (FHD)
Refresh Rate	60 Hz
Brightness	4,000 nits (Typ.), 3,200 nits (Min.)
Contrast Ratio	1,300:1 (Typ.)
Dynamic Contrast Ratio	500,000:1
Colour Gamut	NTSC 67%
Viewing Angle (H × V)	178° × 178°
Colour Depth	10-bit, 1.07 Billion colours
Response Time	8ms (G to G)
Surface Treatment (Haze)	3%
Operation Hours	24/7
Orientation	Portrait / Landscape
Bezel Colour	Black
Bezel Width (T / R / L / B)	9 / 6.5 / 6.5 / 9 mm
Monitor Dimensions (W × H × D)	1,092.7 × 626.4 × 83.5 mm
Weight (Head)	20.8 kg
Packed Weight	25.3 kg
Carton Dimensions (W × H × D)	1,181 × 212 × 725 mm
VESA Mount Interface	600 × 400
Operating Temperature	0°C to 40°C (w/o Direct Sunlight), 0°C to 30°C (Direct Sunlight)
Operating Humidity	10% to 80%
Power Supply	AC 100-240V~, 50/60Hz
Power Type	Built-In Power
Power Consumption (Typical)	345W (Full White), 141W (IEC 62087)
Power Consumption (Max.)	375W
Smart Energy Saving (70%)	135W
DPM / Power Off	Under 0.5W / Under 0.5W
BTU (British Thermal Unit)	1,177 BTU/Hr (Typ.), 1,279 BTU/Hr (Max.)
Connectivity (Input)	HDMI (2), DP (HDCP 1.3), RS-232C (4-pin Phone Jack), RJ45 (LAN), IR, USB 2.0 Type A
Connectivity (Output)	DP (Input DP/HDMI), External Speaker (L/R, 10W + 10W), RS-232C, IR (Sharing RS-232C Out)
Software Compatibility	SuperSign CMS (Yes), SuperSign Control+ (Yes), SuperSign Cloud (No), LG ConnectedCare (Yes)
Embedded Wireless	Wi-Fi / Bluetooth (Built-in)
Special Features	webOS 6.0, Local Contents Scheduling, Group Manager, USB Plug & Play, Fail Over, PIP/PBP, Screen Rotation, Auto Brightness Sensor, SNMP, HDMI-CEC, Conformal Coating (Power Board)

Application Examples

Retail Storefront Window Displays	High-brightness 4,000-nit panel ensures promotions remain visible in direct daylight through glass.
Shopping Centres & High-Footfall Areas	Ideal for digital advertising and brand messaging where strong ambient light would wash out standard screens.
Quick Service Restaurants (QSR) & Takeaway Windows	Display changing menus, offers, and announcements clearly all day, every day with 24/7 reliability.
Transport & Public Information Signage	Reliable for passenger messaging, advertising, or directional content in bright environments.
Corporate Brand & Reception Window Signage	Showcase company messaging in lobbies and window-facing spaces with modern webOS control and monitoring.

The LG 55XS4P Window Facing Digital Signage combines ultra-high brightness, long-life reliability, and modern webOS performance to deliver a premium solution for window-facing commercial display applications. As the direct replacement for the EOL LG 55XS4J, it is an excellent choice for organisations upgrading to a future-ready, high-visibility signage platform.