Dahua LS550UDM-UF · Price in Qatar

Name: Dahua LS550UDM-UF 55-inch FHD Video Wall Display with 1.7mm Bezel
Brand: Dahua
SKU: dahua-ls550udm-uf
Availability: InStock

Overview

The Dahua LS550UDM-UF is a 55-inch Full HD video wall unit with a 1.7mm panel-to-panel gap, designed for tiled walls in control rooms and command centres. It accepts up to 4K at 60Hz over DisplayPort or HDMI 1, passes signal along a chain, and mounts on the wall or floor using a 600×400mm VESA pattern. It suits security operations rooms in Doha and corporate command centres in Lusail. Request a quote from SmartRooms Qatar.

Built for walls that run around the clock

The Dahua LS550UDM-UF is a 55-inch video wall display unit with a Full HD (1920×1080) ADS panel and a 1.7mm panel-to-panel gap. It is made for tiled walls in control rooms, security operations centres and command centres, where several screens must read as one picture and stay on through a full shift.

The panel delivers 500 cd/m² brightness and a 1,200:1 contrast ratio, with 178° horizontal and vertical viewing angles so operators seated at the side of a room see the same image. The 8ms response time and 8-bit colour depth suit dashboards, maps and CCTV feeds. Factory calibration supports consistent colour across many panels, and an anti-glare surface with 25% haze cuts reflections from overhead lighting. A built-in splicing function and 3D noise reduction help when a wall shows one stretched image.

Bezel gap and wall layouts

The 1.7mm bezel-to-bezel figure is the one most buyers check first. The specification also lists 0.9mm top and left, 0.8mm bottom and right, and a 2.45mm active-area gap. A narrow seam keeps the wall reading as one surface on maps, floor plans and live video. Before ordering, confirm the grid of columns and rows and the viewing distance, so the tile count and seam width suit the room.

Connectivity, control and daisy-chaining

Each unit has VGA, DVI-D, two HDMI inputs, one DisplayPort input, audio and IR inputs, plus RS232 for control. The DisplayPort input and HDMI 1 accept up to 4K at 60Hz, which suits a wall fed from a 4K source. The DisplayPort output passes up to 4K at 30Hz to the next display in a chain. Infrared and RS232 control are both supported, and RS232 allows remote control from a computer, so a central system can switch the wall on, off or change inputs.

Where it fits in Qatar

Security and command centres in Doha: a wall of 55-inch panels showing CCTV, access control and operations dashboards, kept running around the clock in an air-conditioned room.
Government and corporate control rooms in Lusail or West Bay: multi-screen boards for teams that work in Arabic and English side by side.
Briefing and meeting rooms in Education City or Msheireb: a tiled display for presentations and video links with colleagues abroad.

What to plan before ordering

Each unit weighs 28kg net and 33kg gross and measures 1212.7mm by 683.5mm by 121.7mm. Wall mounting uses a 600×400mm VESA pattern with M6 fixings, and the unit can also stand on the floor. Check the wall structure and load before fixing, because a free site survey from SmartRooms Qatar is the easiest way to confirm the wall, access and cable routes. Power draw is 180W typical and 195W maximum, with under 0.5W on standby. The rated operating range is 0 to 50°C at 10% to 80% relative humidity, non-condensing. Summer rooms in Qatar can run hotter than that when cooling fails, so keep the wall in a cooled space and confirm the environment with the team.

Request a quote from SmartRooms Qatar for the LS550UDM-UF, with your wall layout, mounting type and cable plan. We usually return quotations within one working day.

Highlights

1.7mm panel-to-panel bezel for tiled video walls
Full HD 1920×1080 ADS panel for continuous operation
Up to 4K at 60Hz input via DisplayPort or HDMI 1
DisplayPort output up to 4K at 30Hz for daisy-chaining
500 cd/m² brightness, 1,200:1 contrast, 178° viewing angle
Floor-standing or wall-mounted; 600×400mm VESA, M6

Plan your video wall

Rows3

Columns3

Wall size about 3.65 × 2.05 m · 9 panels

Estimated timeline

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

Specifications

30 specifications · Source: manufacturer · checked Oct 2026

Model1

Model: DHI-LS550UDM-UF

Display14

Diagonal Size: 55"(16:9)
Panel Type: ADS
Resolution: 1920×1080 (FHD)
Bezel Width: B2B: 1.7mm (Panel Bezel to Panel Bezel), 0.9mm (T/L), 0.8mm (B/R) A2A: 2.45mm (Active area to Active area), 1.5mm (T/L), 0.95mm (B/R)
Backlight: Direct LED
Brightness: 500 cd/ m²
Contrast Ratio: 1200:1
Pixel Density: 40dpi
Viewing Angle: H178°, V178°
Response Time (G-to-G): 8ms
Color Depth: 8bit (16.7M)
Color Temperature: 10,000K
Surface Treatment: Haze 25%, 2H
MTBF: 50,000h

Signals2

Input: VGA(D-Sub)×1, DVI-D×1, HDMI×2, DP×1, RS232×1, Audio×1, IR×1
Output: DP×1, RS232×1, Audio×1

General13

Power Supply: AC100V ～ AC240V, 50/60 Hz
Power Consumption (Typical): 180W
Power Consumption (Max.): 195W
Energy Efficiency Class (EU): G
Installation Mode: Floor-standing, wall-mounted
VESA: 600×400mm, M6
Control Mode: Infrared, RS232 dual mode, supporting remote control by computer
Net Weight: 28kg (61.73Ib)
Gross Weight: 33kg (72.75Ib)
Product Dimension (W×H×D): 1212.7mm×683.5mm×121.7mm (47.7"×26.9"×4.8")
Package Dimension (W×H×D): 1360mm×945mm×280mm (53.5"×37.2"×11.0")
Operating Environment: Temperature 0 ℃ ~+50 ℃
Humidity: 10%RH~80%RH (non-condensing)

Downloads

7 files from the manufacturer

PDF Datasheets LS550UDM-UF_Datasheet.pdf 875 KB PDF Manuals & guides Dahua LCD Display Wall Unit_Quick Start Guide_V1.0.5.pdf 2.1 MB PDF Manuals & guides Dahua Ultra Series LCD Display Wall Unit_User's Manual_V1.0.3-Eng.pdf 754 KB PDF Manuals & guides LS550UDM-UF_INSTALLATION_PROCEDURE.pdf 388 KB PDF Drawings & CAD LS550UDM-UF_DIMENSIONS.pdf 306 KB PDF Drawings & CAD dimension.pdf 873 KB DOCX Other documents LS550UDM-UF_A&E_20260902011806.docx 40 KB

Questions about LS550UDM-UF

What is the Dahua LS550UDM-UF used for?

The LS550UDM-UF is a 55-inch display unit made for tiled video walls, mainly in surveillance centres, command centres and meeting rooms. It has a 1.7mm panel-to-panel gap and an ADS panel rated for continuous operation, so it suits a wall that runs through a full shift. A control room in Doha monitoring CCTV or operations data across a 3 by 2 grid is a typical use, and SmartRooms Qatar can quote the number of units you need.

How narrow is the bezel, and does it affect the picture?

The panel-to-panel bezel is 1.7mm, and the specification lists 0.9mm on the top and left and 0.8mm on the bottom and right. Narrow seams make a multi-unit wall read as one image, which matters for maps, floor plans and live video. The active-area gap is 2.45mm. When planning a wall, the seam width combined with viewing distance determines how visible the joins will be in the room.

Can it run 24 hours a day, seven days a week?

Yes. The unit uses an industrial-level ADS panel suited to continuous operation, and the specification gives an MTBF of 50,000 hours. That makes it a fit for security monitoring rooms and command centres that stay on overnight. Keep the unit inside its 0 to 50°C operating range, with ventilation and cooling in the room, and include a regular check of the wall in routine operations.

What inputs and outputs does the LS550UDM-UF have?

Inputs are VGA (D-Sub), DVI-D, two HDMI ports, one DisplayPort, audio and an IR input, with RS232 for control. The output side provides one DisplayPort, RS232 and audio. For a Doha control room this covers a PC or media player on HDMI or DisplayPort, a legacy VGA source and a control system on RS232. Confirm which sources you will connect before accepting the quote so the cabling is planned correctly.

How do I connect several units into one video wall?

Use the DisplayPort output of one unit to feed the DisplayPort input of the next, which is the daisy-chain route. The DP output carries up to 4K at 30Hz, while the DP input and HDMI 1 accept up to 4K at 60Hz. A 4K source connected to the first unit is passed along the chain, so the wall is fed from one point. SmartRooms Qatar can confirm the wiring plan for your grid during the quotation.

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

The power supply is rated AC100V to AC240V at 50/60Hz, and Qatar's mains supply of 240V at 50Hz falls within that range. Typical draw is 180W and maximum is 195W, with under 0.5W on standby. The data sheet does not list the power cable type or plug, so the quotation will confirm the cable supplied and any adapter needed for the sockets at your site.

Is it suitable for hot or dusty areas such as lobbies with glass walls?

The stated operating range is 0 to 50°C with 10% to 80% relative humidity, non-condensing. Qatar summers can exceed 45°C, so the unit should sit in an air-conditioned room rather than an exposed lobby, a glazed atrium or an outdoor setting. The data does not give an ingress or dust rating, so SmartRooms Qatar will confirm the environment for your site when you request a quote.

How do I mount it on a wall, and how much does it weigh?

Wall mounting uses a 600×400mm VESA pattern with M6 fixings, and the unit can also be installed floor-standing. Each unit weighs 28kg net and 33kg gross, so the bracket and wall structure must carry several units in a grid. SmartRooms Qatar offers a free site survey to check wall type, load and access before a large video wall is installed.

How much power will a multi-unit wall draw?

Each unit draws 180W typical and 195W maximum, and under 0.5W on standby. A 3 by 3 wall of nine units therefore draws about 1,620W typical and 1,755W at maximum, before any media players or controllers. Plan circuit capacity and cooling accordingly, and check the figures with your electrical contractor before the wall is energised.

How is the wall controlled, and can it be run from a computer?

Control is available via infrared and RS232, and the RS232 interface supports remote control by computer. A control room in Doha can therefore switch units on and off, or change inputs, from a central PC or control system rather than handling remotes. Confirm the control method your system needs when requesting a quote.

Can SmartRooms Qatar install the wall and deliver it across Qatar?

SmartRooms Qatar supplies and delivers to all eight municipalities of Qatar and provides professional installation. For a wall of several units, a site survey is recommended first, covering the wall structure, the 28kg per-unit weight and the cable route from the source. Government and school buyers can issue a purchase order (LPO) or reference a government tender, and payment is by bank transfer, cheque or purchase order.