Dahua LDH55-LAI400L · Price in Qatar

Name: Dahua LDH55-LAI400L 55-inch 4K LCD Digital Signage Display
Brand: Dahua
SKU: dahua-ldh55-lai400l
Availability: InStock

Overview

The Dahua LDH55-LAI400L is a wall-mounted 55-inch 4K LCD digital signage display built for continuous running. It pairs an industrial-grade panel with an Android 11 player, accepts 4K input over HDMI 2.1, drives two 10 W speakers, and is managed remotely from a central platform. It suits reception areas, corridors and waiting rooms in Doha and Lusail. Request a quote from SmartRooms Qatar.

Continuous 4K playback on a 55-inch wall screen

The Dahua LDH55-LAI400L is a 55-inch wall-mounted LCD screen with a 16:9 panel at 3840 × 2160 resolution. Its industrial-grade panel is designed to run for long hours every day, and the display carries a typical brightness of 500 cd/m² with a 178° viewing angle both horizontally and vertically. Viewers standing at the side of a corridor or seated in a lobby can still read the content.

The screen uses a DLED backlight, an 8 ms typical response time and a 10-bit colour panel (8-bit plus FRC), which keeps video loops and moving graphics smooth. The 25% haze surface treatment softens reflections from ceiling lights, a useful detail in bright lobbies.

Built-in Android player and what it handles

Content plays from the screen itself. The unit runs Android 11 on a quad-core A55 processor at 1.92 GHz, with 4 GB of RAM and 32 GB of internal storage. It decodes H.265 up to 2160p at 60 fps, H.264 up to 2160p at 30 fps and VP9 up to 2160p at 60 fps, and it plays mp4, avi, mov, mkv and wmv files. A TF card slot accepts cards up to 128 GB, and a USB 3.0 port and a USB 2.0 port are available for local media.

Split-screen layouts can be set up so one zone shows a timetable while another plays a promotional video. Multiple play modes give programme managers control over the order in which content appears.

Central management across several screens

The Dahua platform uses a browser-based architecture to schedule programmes by time and location, produce operation reports and push updates to remote terminals. Programme releases can pass through multi-level permission review, each terminal can be protected with a password, and platform data is encrypted in transit. This matters for a school group with several branches or a hotel group running screens across more than one site, where one team needs to update everything.

Where this 55-inch model fits in Qatar

Hotel lobbies in West Bay or The Pearl can mount the screen in portrait orientation beside the reception desk to show arrival information, restaurant menus and event listings.

Private schools in Al Wakrah or Al Rayyan may place one on a corridor wall for class timetables, announcements and wayfinding, where 55 inches is readable from several metres away.

Clinic waiting rooms in Msheireb or Al Sadd can show queue information and health awareness loops, with the built-in speakers used for short audio clips when the room is quiet.

What to plan before ordering

The unit measures 1243.7 mm × 728.7 mm × 79.3 mm without its bracket and weighs 11.7 kg net. It mounts on a 200 × 200 mm VESA pattern in horizontal or vertical orientation, and the bracket is supplied. Check the wall and fixings before installation; SmartRooms Qatar offers free site surveys for this purpose.

Power is rated 100–240 VAC at 50/60 Hz, a range that covers Qatar's 240 V mains, with 95 W typical and 160 W maximum consumption and standby at 0.5 W or less. Heat matters: the operating range is 0 °C to +40 °C and the manufacturer advises avoiding direct sunlight. In Qatar, where summer temperatures can exceed 45 °C, install the screen indoors in an air-conditioned space away from sun-facing glass, and confirm the location with the SmartRooms Qatar team before installation.

If your organisation orders several units under one LPO, the team can prepare a single quotation covering all of them. Request a quote from SmartRooms Qatar and receive a quotation, usually within one working day.

Highlights

55-inch 4K (3840 × 2160) LCD panel with 178° viewing angles
Industrial-grade panel rated for up to 24-hour daily use
Android 11 player with quad-core CPU and 32 GB storage
HDMI 2.1 input supporting 4K at 60 Hz
Scheduling by time and location with operation reports
Horizontal or vertical mounting on a 200 × 200 mm VESA pattern

Estimated timeline

Quotation within 1 working day · delivery timing depends on stock availability, and we confirm it with your quotation.

Specifications

46 specifications · Source: manufacturer · checked Oct 2026

LCD Panel11

Panel Dimensions: 55 inch
Backlight: DLED
LCD Technology: IPS/VA
Aspect Ratio: 16:9
Brightness: 500 cd/m² (typ.)
Contrast: IPS 1200:1(typ.) / VA 4000:1(typ.)
Display Colors: 10 bit (8 bit + FRC), 1.07B colors
Resolution: 3840 (H) × 2160 (V)
Viewing Angle: 178° (H); 178° (V)
Response Time: 8 ms (typ.)
Surface Treatment: Haze 25%

Built-in System5

Operating System: Android 11.0
CPU: 4 cores A55, 1.92 GHZ
RAM: 4 GB
ROM: 32 GB
Video Decoding: 1-ch H.265 HEVC MP-10@L5.1 up to 2160p@60 fps 1-ch H.264 AVC HP@L5.1 up to 2160p@30 fps; 1-ch VP9 Profile 2 up to 2160p@60 fps 4-ch MVC up to 1080p@30 fps 4-ch MPEG-4 ASP@L5 up to 1080p@30 fps 4-ch WMV/VC-1 SP/MP/AP up to 1080p@30 fps

Function3

Audio Compression: MPEG-3,WMA,WAV
Video Compression: MPEG-4, H.264 AVC/MVC, H.265 HEVC
Video Format: mp4, avi, mov, mkv, wmv

Device Ports8

Network Port: 1 × RJ–45 10/100/1000 Mbps self-adaptive Ethernet port
Wi-Fi: Optional (External Wi-Fi module)
Bluetooth: NO
Data Transmission Ports: 1 × USB 2.0 ports (type A) 1 × USB 3.0 ports (type A) 1 × TF card slot, up to 128 GB
Video Input: 1 × HDMI 2.1 (4K @60Hz)
Video Output: NO
Audio Port: 1 × 3.5 mm jack Mic
IR Receiver: Yes

Speaker1

Built-in Speaker: 2 × 10 W

General17

Power Supply: 100–240 VAC, 50/60 Hz
Power Consumption: 95 W (typ); 160 W (max)
Standby Power Consumption: ≤0.5 W
Operating Temperature: 0 °C to +40 °C (+32 °F to +104 °F) (avoid direct sunlight)
Storage Temperature: –20 °C to +60 °C (-4 °F to +140 °F)
Operating Humidity: 10%–85% (RH), non-condensing
Storage Humidity: 10%-90% (RH), non-condensing
Product Material: Plastic casing
Casing Color (Frame/Rear): Black
Product Dimensions: 1243.7 mm × 728.7 mm × 79.3 mm (48.96" × 28.69” × 3.12") (without bracket) (without wall mount bracket)
Packaging Dimensions: 1320 mm × 117 mm × 805 mm (51.97" × 4.61” × 31.69")
Net Weight: 11.7kg
Gross Weight: 16.9kg
Installation: Horizontal/Vertical mount
Display Mode: Landscape/Portrait
Wall Mount VESA: 200 mm × 200mm
Accessory: Bracket, user's manual, power cord, legal and regulatory information, remote control

Certification1

Certifications: CE, ERP

Downloads

7 files from the manufacturer

PDF Datasheets LDH55-LAI400L_20240421.pdf 2.5 MB PDF Manuals & guides Digital Signage_Quick Start Guide_V1.0.3.pdf 1.7 MB PDF Manuals & guides Digital Signage_User's Manual_V1.0.2.pdf 7.7 MB PDF Drawings & CAD LDH55-LAI400L_DIMENSIONS.pdf 158 KB PDF Drawings & CAD LDH55-LAI400L_SOURCE_FILE.pdf 19 KB 2511 Software & firmware · Opens on manufacturer site DH_LDM-A(T982)_MultiLang_Android_V3.000.0000002.0.R.251126 DOCX Other documents LDH55-LAI400L_A&E_20260908161752.docx 40 KB

Questions about LDH55-LAI400L

What is the Dahua LDH55-LAI400L designed for?

It is a wall-mounted 55-inch LCD signage screen for showing video loops, menus, timetables and announcements in reception areas, corridors and waiting rooms. Its 3840 × 2160 panel and 178° viewing angles keep content readable from different positions in a room. Built-in Android playback lets the screen run its own schedule without a separate media player on the wall. Request a quote to discuss the right location in your building.

Can it run continuously every day?

Yes, within its operating limits. The panel is designed for continuous use and works up to 24 hours a day, which suits long opening hours in a hospital waiting area or a mall atrium. The operating range is 0 °C to +40 °C, so the screen should run in an air-conditioned space away from direct sunlight. SmartRooms Qatar can review the room conditions during a free site survey before you order.

Is it suitable for outdoor or sun-facing areas in Qatar?

No, not as specified. The manufacturer rates the operating temperature at 0 °C to +40 °C and advises avoiding direct sunlight, while Qatar summer temperatures can exceed 45 °C. Choose an indoor position away from sun-facing glass, such as an interior corridor in an office in the Industrial Area or a lobby in Doha. Confirm the exact location with the SmartRooms Qatar team before the quotation is finalised.

What video formats and resolutions can it play?

It decodes H.265 up to 2160p at 60 fps, H.264 up to 2160p at 30 fps and VP9 up to 2160p at 60 fps, covering 4K files encoded in those codecs. It plays mp4, avi, mov, mkv and wmv files from internal storage, a USB port or a TF card up to 128 GB. For a live 4K source from a laptop, use the HDMI 2.1 input, which accepts 4K at 60 Hz.

Can I connect a laptop or media player through HDMI?

Yes. The single HDMI 2.1 input accepts 4K at 60 Hz and is useful when a live feed, such as a presentation or a broadcast from a control room, needs to appear on the screen. The unit has no video output, so it cannot pass the signal on to a second display. If you need live input in both a lobby and a boardroom, plan one HDMI source for each screen.

Does it include Wi-Fi and Bluetooth?

Wi-Fi is optional and needs an external Wi-Fi module, and Bluetooth is not supported. The standard network connection is a 10/100/1000 Mbps RJ-45 Ethernet port, which is the wired option best suited to remote management. Ask for Wi-Fi when running cable to the wall is difficult, and include the module in your quotation request so the configuration is confirmed before delivery.

How are several screens managed from one place?

The Dahua platform uses a B/S architecture to schedule programmes by time and location, generate operation reports and send updates to each terminal remotely. Programme releases can go through multi-level permission review, each terminal can be password protected, and data transmission is encrypted. A school group with branches in Al Khor and Mesaieed could therefore update every screen from a single team.

Can it be mounted in a school corridor or lecture building?

Yes, using the supplied bracket on a 200 × 200 mm VESA pattern, in horizontal or vertical orientation. The unit measures 1243.7 mm × 728.7 mm × 79.3 mm without the bracket and weighs 11.7 kg net, so confirm the wall can carry it. A private school in Al Wakrah fitting out a new block would typically book a site survey first to check fixings and wall condition.

Will it work with Qatar's 240 V mains supply?

The power supply is rated 100–240 VAC at 50/60 Hz, which covers Qatar's 240 V mains. Typical consumption is 95 W, with 160 W maximum and standby at 0.5 W or less. A power cord is included; confirm the plug fitting for BS 1363 sockets with the SmartRooms Qatar team before installation. When requesting a quote, state how many sockets are available at each mounting point.

What comes in the box?

The package includes the wall bracket, user's manual, power cord, legal and regulatory information and a remote control. Packaging measures 1320 mm × 117 mm × 805 mm with a gross weight of 16.9 kg, which matters when moving the unit up a stairwell or through a narrow lift. For a hotel fit-out in West Bay, plan the lift and access route before the unit arrives on site.

Which certifications does it carry, and can several units be bought under one LPO?

The unit carries CE and ERP certifications. Organisations can issue one purchase order (LPO) covering several units under a single quotation, which suits a school or government office rolling out screens across several floors. Payment can be made by bank transfer, cheque or purchase order, and the manufacturer's warranty applies to each unit. Specify the number of screens and mounting locations in your request.