Product SKU: DHI-LDH50-SAI400K
Product Overview
Built for wall-mounted digital signage deployments in commercial and corporate environments, the Dahua DHI-LDH50-SAI400K is a 50-inch 4K UHD LED LCD display running Android 8.1 on a 4-core Cortex-A17 processor. Featuring a native 3840×2160 resolution at 16:9 aspect ratio, it delivers sharp content rendering across both landscape and portrait orientations, making it suited to retail displays, reception areas, wayfinding installations, and lobby signage. Equipped with Dahua MPS platform support, it enables unified remote management of content schedules, program releases, and terminal permissions across multiple screens from a single interface. Built with a full metal casing, the display includes 2x5W stereo speakers, HDMI and dual USB inputs, an RJ45 network port, a SIM slot for cellular connectivity, and a TF card slot for local storage. It also includes RS232 external control and a 400x400mm VESA mount pattern for flexible installation. This makes it well suited to integrators deploying managed signage networks where remote content control and consistent 4K output are priorities.
Key Capabilities
4K UHD Resolution
The 3840×2160 panel with 10-bit colour rendering (1.07 billion colours) produces detailed, accurate imagery suited to high-visibility signage. Combined with a 1000:1 contrast ratio and 178-degree viewing angle both horizontally and vertically, content remains readable across wide viewer positions.
Android 8.1 with Onboard Processing
Running Android 8.1 on a quad-core Cortex-A17 processor at 1.6 GHz with 2 GB RAM and 16 GB ROM, the display operates as a standalone smart signage unit. It decodes up to 4K content natively without requiring an external media player in most deployments.
Dahua MPS Remote Management
Integration with the Dahua MPS platform allows system integrators and operators to schedule and push content remotely, manage multiple screens by time and location, apply multi-level permission controls for program release, and generate operational reports from a browser-based interface.
Flexible Connectivity Options
Inputs include RJ45 networking, HDMI, dual USB ports, a TF card slot, and a SIM slot for cellular data connectivity. This combination supports both network-managed and locally stored content, and allows the display to operate in locations where fixed network infrastructure is unavailable.
Landscape and Portrait Display Modes
The DHI-LDH50-SAI400K supports both landscape and portrait orientations, giving installers the flexibility to mount it in either direction to suit the display environment. This is particularly useful in retail corridors, narrow lobbies, and wayfinding columns where portrait layouts improve readability.
Best For
- Corporate Reception and Lobby Signage: The full metal casing, 4K resolution, and portrait/landscape flexibility make it a practical fit for professional reception environments where content presentation and build quality both matter.
- Retail Display Networks: Dahua MPS platform support allows centrally managed content scheduling across multiple screens, with time-based and location-based program releases suited to multi-store retail operations.
- Wayfinding and Directory Installations: The 178-degree viewing angle and portrait mounting capability make it well suited to corridor and directory-style signage where viewers approach from a range of angles.
- Sites with Limited Fixed Network Infrastructure: The onboard SIM slot allows cellular data connectivity, enabling remote content management in locations where running a fixed network cable to the display is not practical.
Why Choose the DHI-LDH50-SAI400K
The DHI-LDH50-SAI400K stands apart from standard commercial displays by combining 4K UHD output with an Android 8.1 operating system, a SIM slot for cellular connectivity, and native integration with the Dahua MPS content management platform. A basic commercial screen requires a separate media player, separate management software, and a fixed network connection. This model handles all three natively. The quad-core processor manages 4K decoding without stuttering, the 16 GB onboard ROM stores local content for offline fallback, and the MPS platform provides encrypted data transmission with multi-level permission controls for program release. At 50 inches with a full metal casing and 400x400mm VESA mounting, it is sized for permanent wall installation in commercial spaces. Available through Security Wholesalers, the DHI-LDH50-SAI400K is a strong option for integrators building managed signage networks where remote control, cellular backup, and 4K output need to work together in a single unit.
Buyer Decision Tips
Brightness and Ambient Light: The DHI-LDH50-SAI400K has a brightness rating of 320 cd/m². This is appropriate for typical indoor environments such as reception areas, retail interiors, and corridors with controlled lighting. It is not suited to direct sunlight or high-glare window-facing installations. If the display will be positioned near a large window or in a brightly lit open area, confirm that ambient light levels will not wash out the screen before specifying this model.
Android 8.1 and App Compatibility: This display runs Android 8.1, which is not the most recent Android version. Before deploying third-party signage applications, confirm that the apps or management software you intend to use are compatible with Android 8.1. For deployments using the Dahua MPS platform exclusively, this is not a concern, as MPS is designed to work with this specific firmware and hardware combination.
Key Features & Technical Specifications
| Model |
DHI-LDH50-SAI400K |
| Display Size |
50 inches |
| Resolution |
3840×2160 (4K UHD) |
| Aspect Ratio |
16:9 |
| Backlight Type |
LED |
| Brightness |
320 cd/m² |
| Contrast Ratio |
1000:1 |
| Display Colours |
1.07 billion (10-bit) |
| Viewing Angle (H x V) |
178° x 178° |
| Response Time |
8ms |
| Display Mode |
Landscape / Portrait |
| Panel Lifespan |
30,000 hours |
| Operating System |
Android 8.1 |
| CPU |
4-core Cortex-A17, 1.6 GHz |
| RAM |
2 GB |
| ROM |
16 GB |
| Max Decode Resolution |
4K |
| Inputs |
HDMI x1, USB x2, RJ45 x1, TF Slot x1, SIM Slot x1, 3.5mm Audio In x1 |
| Audio Output |
Earphone x1 |
| Built-in Speakers |
2 x 5W stereo |
| External Control |
RS232 |
| VESA Mount Pattern |
400 x 400mm |
| Casing |
Full metal |
| Management Platform |
Dahua MPS |
Ideal Use Cases
Corporate Reception Areas
The full metal casing and 4K UHD panel suit permanent wall-mounted installations in corporate lobbies where display quality and a professional appearance are both expected. Portrait or landscape mounting adapts to the available wall space.
Retail Promotional Displays
Dahua MPS platform support allows retailers to schedule and push promotional content to multiple screens centrally, with time-based and location-based program releases managing what plays in each store without requiring on-site access.
Wayfinding and Directory Signage
Portrait mounting combined with the 178-degree wide viewing angle makes the DHI-LDH50-SAI400K effective for corridor or entrance wayfinding displays where visitors approach from different directions and need to read the screen clearly without being directly in front of it.
Remote or Cellular-Connected Sites
The onboard SIM slot enables cellular data connectivity, allowing the display to receive updated content remotely at sites where fixed network cabling to the screen location is not available, without requiring a separate cellular data modem or router.
Multi-Screen Managed Signage Networks
Integrators managing content across multiple screens and locations can use the Dahua MPS browser-based platform to control program scheduling, apply multi-level release permissions, and generate operation reports across the entire deployed screen network from a single management interface.
Choosing the Right Model
- Choose this model if: You need a standalone 4K signage display with an onboard Android operating system, native Dahua MPS management platform support, and a SIM slot for cellular connectivity, for indoor commercial installations in reception areas, retail environments, or corridor wayfinding.
- Choose a different model if: The installation requires a high-brightness panel for window-facing or semi-outdoor use, as 320 cd/m² is suited to controlled indoor lighting only. If your content management system requires a more recent Android version or a third-party digital signage OS, confirm compatibility before specifying this unit.
FAQs
- Does the DHI-LDH50-SAI400K require an external media player to display content?
No. The display runs Android 8.1 on a quad-core Cortex-A17 processor with 2 GB RAM and 16 GB ROM. It is capable of decoding and playing 4K content natively. An external media player is not required for most signage deployments, though HDMI input is available if you prefer to use one.
- What is the Dahua MPS platform and what does it allow me to do remotely?
The Dahua MPS platform is a browser-based content management system that connects to the DHI-LDH50-SAI400K over a network. It allows operators to schedule program releases by time and location, apply multi-level permission controls over what content is approved and published, monitor terminal status, and generate operation reports. All data transmission through the platform is encrypted.
- Can the display be mounted in portrait orientation?
Yes. The DHI-LDH50-SAI400K supports both landscape and portrait display modes. The VESA 400x400mm mounting pattern is compatible with standard commercial wall brackets that allow orientation rotation. Portrait mode suits narrow wall spaces, corridor wayfinding columns, and directory-style signage layouts.
- Is the display suitable for a window-facing or high-ambient-light environment?
The panel brightness is rated at 320 cd/m², which is suited to typical indoor environments with controlled or moderate ambient lighting. Window-facing installations or areas with strong direct sunlight may cause the display to appear washed out. High-brightness commercial displays rated at 700 cd/m² or above are more appropriate for those environments.
- What connectivity options are available for network and content input?
The display includes an RJ45 network port for wired connectivity, a SIM slot for cellular data, an HDMI input, 2 USB ports for local media playback, and a TF card slot for onboard storage expansion. This combination covers wired network, wireless cellular, direct media input, and local storage scenarios.
- Does the display include built-in audio output?
Yes. The DHI-LDH50-SAI400K includes 2x5W stereo speakers built into the unit. It also includes a 3.5mm audio input and a headphone output port. This makes it suitable for content that includes audio without requiring external speakers in most standard signage applications. The DHI-LDH50-SAI400K is available through Security Wholesalers for integrators specifying commercial signage installations.
Additional Information
Dahua DHI-LDH50-SAI400K Datasheet
