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Dahua Pro Series 55-inch Digital Signage – LDH55-HAI400L

Dahua

Dahua Pro Series 55-inch Digital Signage – LDH55-HAI400L

SKU LDH55-HAI400L

The Dahua LDH55-HAI400L is a 55-inch indoor wall-mounted LCD digital signage unit designed for reliable commercial use. It features a 4K UHD IPS/VA panel, Android 11 operating system, and 700 cd/m² brightness. SmartRooms Oman supplies and installs this Pro Series display in Muscat, Salalah and nationwide.

Screen size
55"
Resolution
4K UHD
System
Android 11
VESA
400 × 400 mm

Pricing

Price on request in OMR

Include in your quote
WhatsApp
Written quote usually within one business day Download datasheet (PDF)

  • Written quotation in OMR

    Pricing, availability and warranty on one document.

  • Manufacturer warranty

    Terms confirmed on your quotation.

  • All 11 governorates

    Delivered from Muscat to Dhofar.

  • Quotations in Arabic & English

    Ask for Arabic, English or both.

The product, in detail.

Screen and picture

Screen Size
55 inch
Resolution
3840 × 2160 (4K UHD)
Display Color
10-bit (1.07 billion colours)
Brightness
700 nits

Built-in system

Operating System
Android 11
Processor
ARM 4× Cortex-A55, 1.92 GHz
RAM
4 GB
Storage
32 GB

Audio

Speaker Output
2 × 5 W

Description

This industrial-grade display supports 24/7 operation with a quad-core CPU and 4 GB RAM. The Android 11.0 platform enables remote content management via B/S architecture, allowing administrators to schedule programs and generate reports by location. It handles 4K video decoding for crisp visual communication in corporate lobbies and educational facilities.

Connectivity options include Gigabit Ethernet, Wi-Fi 6, HDMI 2.1 input and USB ports for flexible content sources. The metal casing measures 1,232.6 mm by 703.4 mm with a slim 10.3 mm bezel. It fits standard 400×400 mm VESA mounts, ensuring secure installation in offices and ministries across Oman.

Ideal for: Digital information displays in Omani schools, universities, government ministries and corporate offices requiring 24/7 reliability.

  • 4K UHD Resolution – Delivers 3840 × 2160 pixel clarity on a 55-inch IPS/VA panel with 10-bit color depth.
  • Android 11 Operating System – Built-in quad-core CPU and 4 GB RAM enable smooth content playback and remote platform management.
  • High Brightness Panel – Provides 700 cd/m² typical brightness for clear visibility in well-lit indoor environments.
  • Advanced Connectivity – Includes HDMI 2.1, Gigabit Ethernet, Wi-Fi 6 and USB 3.0 for versatile content input and network control.
  • Wall Mount Installation – Compatible with 400 × 400 mm VESA standards and supplied with a mounting bracket for secure placement.

Specifications

Manufacturer specifications · confirmed on your quotation

Display

Screen Size
55 inch
Resolution
3840 × 2160 (4K UHD)
Display Color
10-bit (1.07 billion colours)
Brightness
700 nits
Backlight
Direct LED
Viewing Angle
178° (H) / 178° (V)
Surface Protection
Haze 25%

System

Operating System
Android 11
Processor
ARM 4× Cortex-A55, 1.92 GHz
RAM
4 GB
Storage
32 GB

Connectivity

HDMI Input
HDMI In × 1
USB Ports
USB 2.0 × 1, USB 3.0 × 1
Audio out
3.5 mm external speaker out
Ethernet
RJ45 × 1
Wi-Fi
802.11a/b/g/n/ac/ax (2.4/5 GHz)
SD card slot
microSD card slot × 1

Camera & audio

Speaker Output
2 × 5 W

Physical & warranty

Dimensions
1232.6 × 703.4 × 25.0 mm
Weight
20.5 kg
Shipping Dimensions
1324 × 130 × 805 mm
VESA
400 × 400 mm
Mounting Orientation
Portrait / Landscape
Material
Metal casing
Power Consumption
123 W (typical), 152 W (max)
Power Standby
≤ 0.5 W
Operating Temperature
0°C to 40°C
Operating Humidity
10% to 85% RH
Certifications
CE EMC, CE LVD, CE ERP, RED

Other

Key Features
Industrial-grade panel, 4K decoding, multi-mode playback, split-screen layouts, time and location scheduling, operation reports, encrypted data transmission, remote management
Package Contents
Wall-mount bracket, Power cord, Legal and regulatory information, User's manual, Remote control
More Information
Aspect ratio: 16:9 | Panel technology: IPS / VA | Contrast ratio: 1,200:1 (IPS) / 4,000:1 (VA) | Response time: 8 ms | Bezel: 10.3 mm | Storage conditions: -20 to 60 °C, 10% to 90% RH | Input voltage: 100–240 V AC, 50/60 Hz | Operating hours: 24/7

Complete the room

One quotation for the whole setup.

Select what else the room needs — we will price it together, with delivery and installation.

Downloads

Delivery & installation in Oman

Delivered to Muscat, Salalah, Sohar, Nizwa and every other governorate, with installation available through our partner teams. Lead time for this model is confirmed on your written quotation.

Stock held in Muscat for fast-moving models — ask for current availability.

Questions about ordering

How do I get a price?
Ask for a written quotation. Use Request pricing on any product page, WhatsApp +968 9664 1360 or email sales@smartrooms.me with the model or part number, the quantity, the delivery location in Oman and whether installation is needed. The quotation covers pricing, availability, warranty and installation options.
Do you deliver across Oman, and how long does it take?
Yes — to Muscat, Salalah, Sohar, Nizwa and the other governorates. Lead time depends on the model, quantity and configuration, so it is confirmed in writing on the quotation and again when your purchase order is acknowledged.
Do you install?
Yes. Installation is available across Oman through our partner installation teams. Its scope — mounting, cabling, positioning, commissioning and handover — is written into the quotation, so anything outside it is clear before the visit.
What warranty applies?
The manufacturer's warranty applies, with the terms confirmed on your quotation. The quotation states the warranty holder, period and service level, and we coordinate any claim with the manufacturer or its authorised service partner on your behalf.
Do you support government tenders?
Yes. We quote tender quantities and supply what a tender file needs: an itemised quotation addressed to your entity, manufacturer datasheets, technical compliance sheets, the delivery and installation scope, and a warranty statement.
Can I get the quotation in Arabic?
Yes — in Arabic, English or both. Manufacturer datasheets are usually published in English.
Can SmartRooms Oman supply the Dahua LDH55-HAI400L?

Yes, SmartRooms Oman is an authorised reseller of the Dahua LDH55-HAI400L digital signage display. We provide itemised quotations in Omani Rial with VAT shown. Our coverage extends to all 11 governorates, from Musandam to Dhofar, ensuring delivery and installation support for your project.

Does this display support remote content management?

Yes, the device uses a B/S architecture for unified platform management. Administrators can control programs remotely, schedule content by time and location, and generate operation reports. This feature helps facilities in Muscat and beyond manage multiple screens efficiently without manual intervention.

Is the Dahua LDH55-HAI400L suitable for government tenders?

Yes, SmartRooms Oman supports government tender processes with datasheets and compliance statements. We can provide the necessary technical documentation required for tender submissions in Oman. Our team assists with preparation to ensure your bid meets the specific requirements of Omani authorities.

What are the connectivity options for content input?

The display includes one HDMI 2.1 port for 4K video input. It also features one USB 3.0 port, one USB 2.0 port and a TF card slot up to 128 GB. Network connectivity is provided via a Gigabit Ethernet port and Wi-Fi 6 (802.11ax) for wireless content updates.

How is delivery and installation handled in Oman?

SmartRooms Oman handles delivery and installation through partner teams. One quotation covers hardware, delivery and labour costs. We serve clients in Muscat, Sohar, Salalah and all other governorates. Our team ensures the wall-mounted display is securely installed and ready for operation upon completion.

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