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LG 55UM777H0UA Pro Centric UM777H 55" Smart LED-LCD TV - 4K UHDTV - HDR10 Pro - HLG - Dark Charcoal Gray
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Product Features
Technical Overview
This television combines a 55-inch LED-LCD panel with a 60 Hz refresh rate and 2160p scan format, reducing motion blur for clear video playback. The 16:9 aspect ratio accommodates widescreen content, while the ATSC and ClearQAM digital tuners provide reliable over-the-air and cable TV reception.
Connectivity includes three HDMI ports for high-bandwidth video and audio, a USB port for media playback, and Ethernet for stable network access. The AI Sound system with 20 W RMS output delivers clear audio, and features like Wake on LAN (WOL) and Miracast technology support modern streaming and remote management workflows.
Relevant factors for this section include Screen Size Class, Viewable Screen Size, Operating System, Digital Tuner. When those points are considered together, they give buyers a clearer picture of how the product is equipped, how it fits into deployment, and what kind of day-to-day role it is meant to support.
Key Product Advantages
The Pro Centric series is designed for business and institutional use, offering features that enhance usability and control in managed environments.
These strengths make the product easier to deploy and manage in real environments, especially where reliability, usability, and day-to-day operational continuity matter. Notable benefits include Pro:Centric Platform, Smart TV Capabilities.
Pro:Centric Platform
Includes Pro:Centric and Pro:Centric Direct for simplified content management and distribution, along with Pro:Idiom DRM for secure digital rights management in commercial applications.
- Remote Diagnostic
- Lock Mode
- Welcome Screen
Smart TV Capabilities
webOS 23 provides an intuitive interface with AI Picture Pro for optimized image quality and AI Acoustic Tuning for adaptive sound. The built-in web browser and Netflix support expand entertainment and information options.
- Instant On
- Remote Jack Pack (RJP)
- Miracast Technology
Deployment / Use Cases
This TV is versatile enough for various professional settings where a balance of performance, smart features, and durability is required.
In corporate boardrooms or training rooms, the 4K resolution and HDR support make presentations and video conferences visually compelling. The Pro:Centric features allow IT staff to manage content and settings remotely, reducing on-site maintenance.
Hospitality & Digital Signage
The Dark Charcoal Gray chassis blends into hotel lobbies, restaurants, or retail environments. With Ethernet connectivity and Wake on LAN, it can be integrated into networked digital signage systems for scheduled content updates.
Education & Public Spaces
The 55-inch screen size and clear audio output suit classrooms or common areas. Features like Lock Mode and Remote Diagnostic help administrators maintain control and troubleshoot without disrupting usage.
Localization and Operating System
The LG Pro Centric UM777H runs on webOS 23, a smart TV platform designed for intuitive navigation and streamlined access to apps and services. This operating system supports a wide range of streaming content, including Netflix, and includes a built-in web browser for browsing websites and accessing online resources directly from the TV.
While the TV does not include specific localization features such as multiple language keyboards or regional tuners, its webOS 23 interface is widely compatible with North American standards, including ATSC and ClearQAM digital tuners for reliable over-the-air and cable TV reception. This makes it suitable for use in commercial and professional environments across the United States and Canada, where consistent performance and ease of use are prioritized.
Features like AI Picture Pro and AI Acoustic Tuning adapt to content and ambient conditions, enhancing picture and sound quality without manual adjustments. The Pro:Centric platform, including Pro:Centric Direct and Pro:Idiom DRM, provides tools for secure content management and distribution, which is valuable in settings like corporate offices, hospitality, or digital signage where controlled access and remote management are essential.
webOS 23 Smart Platform
Offers a user-friendly interface with access to streaming apps, web browsing, and smart features like AI Picture Pro and AI Acoustic Tuning, ensuring a modern and efficient viewing experience.
- Netflix streaming support
- Built-in web browser
- Instant On functionality
Physical Profile
The TV features a slim profile with a depth of just 1.17 inches (29.70 mm) without the stand, making it suitable for wall mounting. The included stand increases the depth to 11.93 inches (303 mm) for stable tabletop placement. The VESA 300 x 300 mount pattern supports standard brackets for secure installation on walls or mounts.
- Width
- 48.66" (1236 mm)
- Depth
- 1.17" (29.70 mm)
- Height
- 28.19" (716 mm)
- Weight
- 33.07 lb (15000 g)
Highlights
- 55-inch 4K UHDTV with 3840 x 2160 resolution for sharp, detailed images
- HDR10 Pro, HLG, and HDR10 support for enhanced contrast and color depth
- webOS 23 smart platform with Netflix streaming and built-in web browser
- AI Picture Pro and AI Acoustic Tuning for optimized picture and sound quality
- Three HDMI ports and USB connectivity for versatile media and device connections
- Pro:Centric and Pro:Centric Direct features for commercial content management
- Ethernet connectivity with Wake on LAN (WOL) for network control
- VESA 300 x 300 mount compatible for flexible wall or stand installation
- Dark Charcoal Gray finish with a sleek, professional appearance
- 3-year limited warranty for added reliability assurance
Specifications
| Specifications | |
|---|---|
| Manufacturer | LG Electronics |
| Manufacturer Part Number | 55UM777H0UA |
| Brand Name | LG |
| Product Line | Pro Centric |
| Product Series | UM777H |
| Product Model | 55UM777H0UA |
| Product Name | 55UM777H0UA Smart LED-LCD TV |
| Product Type | Smart LED-LCD TV |
| Technical Information | |
| Screen Size Class | 55" (1397 mm) |
| Viewable Screen Size | 55" |
| Operating System | webOS 23 |
| Features | AI Acoustic Tuning,Sound Sync,Remote Diagnostic,Instant On,Lock Mode,Remote Jack Pack (RJP),Welcome Screen,Pro:Centric Direct,Pro:Centric,Pro:Idiom Digital Right Management (DRM),AI Picture Pro,Miracast Technology,Web Browser,Wake on LAN (WOL) |
| Touchscreen | No |
| PC Streaming | Yes |
| Internet Access | Yes |
| Streaming Service | Netflix |
| Web Browser | Yes |
| Video | |
| Digital Tuner | ATSC,ClearQAM |
| Video Signal Standard | 4K UHDTV |
| Maximum Resolution | 3840 x 2160 |
| Standard Refresh Rate | 60 Hz |
| Scan Format | 2160p |
| Aspect Ratio | 16:9 |
| High Dynamic Range (HDR) Type | HDR10 Pro,HLG,HDR10 |
| Audio | |
| RMS Output Power | 20 W |
| Sound System | AI Sound |
| Network & Communication | |
| Ethernet | Yes |
| Wireless LAN | No |
| Interfaces/Ports | |
| HDMI | Yes |
| Total Number of HDMI Ports | 3 |
| USB | Yes |
| Power Description | |
| Input Voltage | 100 V AC,240 V AC |
| Energy & Performance | |
| Maximum Operating Power Consumption | 136 W |
| Standby Power Consumption | 0.5 W |
| Physical Characteristics | |
| Color Family | Gray |
| Product Color | Dark Charcoal Gray |
| VESA Mount Standard | 300 x 300 |
| Height | 28.19" (716 mm) |
| Width | 48.66" (1236 mm) |
| Depth | 1.17" (29.70 mm) |
| Height with Stand | 30.35" (771 mm) |
| Width with Stand | 48.66" (1236 mm) |
| Depth with Stand | 11.93" (303 mm) |
| Weight (Approximate) | 33.07 lb (15000 g) |
| Weight with Stand (Approximate) | 40.12 lb (18200 g) |
| Warranty | |
| Limited Warranty | 3 Year |
User Manual
FAQ
What screen size is listed?
It features a display specification of 55", giving you clear visuals for work and media use.
What resolution or display format is specified?
It features a display specification of 3840 x 2160, giving you clear visuals for work and media use.
What refresh rate or brightness details are available?
The listed power specification is 60 Hz, which helps position the unit for the right load level and installation role.
What input or connectivity options are listed?
Connectivity support is listed in the product specifications, including the relevant wireless or port options when available.
Does the display support VESA mounting or adjustment features?
It features a display specification of 300 x 300, giving you clear visuals for work and media use.
What panel or display technology is mentioned?
It features a display specification of HDR10 Pro,HLG,HDR10, giving you clear visuals for work and media use.
| Qty | Price | Available |
|---|
