Dahua LS550KDH-UF 55-inch UHD Video Wall Display Unit

Name: Dahua LS550KDH-UF 55-inch UHD Video Wall Display Unit
Brand: Dahua
SKU: dahua-ls550kdh-uf
Availability: InStock

Overview

The Dahua LS550KDH-UF is a 55-inch UHD video wall unit with a 1.7mm panel-to-panel bezel, built for continuous 24/7 operation. It offers 700 cd/m² brightness, an anti-glare surface and 4K daisy chaining through DisplayPort, so a tiled array can run as one large picture. It suits control rooms, surveillance centres and meeting rooms across Doha and the wider country. Request a quote for your wall layout.

A narrow-bezel 55-inch unit for tiled video walls

The Dahua LS550KDH-UF is a 55-inch UHD display unit with a 3840×2160 resolution, made to be combined with other units into one large video wall. Its 1.7mm panel-bezel-to-panel-bezel gap keeps the joins between screens small, so a grid of these units reads as one continuous image. The ADS LCD panel is rated for continuous 24/7 operation, which suits rooms that run around the clock.

Specifications that shape the purchase

Brightness and contrast: 700 cd/m² with a 1,200:1 contrast ratio and direct LED backlight.
Surface: anti-glare panel with 25% haze and 3H hardness, useful where ceiling lights reflect on the screen.
Video inputs: two HDMI, one DisplayPort, one DVI-D and one VGA, with RS232, audio and IR inputs.
Daisy chain: up to 4K@60Hz input through DP IN or HDMI 1, and up to 4K@30Hz output through DP OUT.
Reliability: MTBF rated at 50,000 hours, with a built-in picture splicing function and 3D noise reduction.

Where it fits in Qatar

A security operations room in West Bay might tile four of these units into a 2×2 wall showing camera feeds that operators watch through the night. A process control room at an industrial site in Mesaieed or Ras Laffan could use a larger grid for plant status dashboards, provided the room is climate-controlled. In Education City, a research group might use a single unit as a shared screen in a meeting room, linking to colleagues abroad in a different time zone.

Planning the installation

Each unit weighs 25.6 kg net (34.3 kg gross) and measures 1211.3 × 682.1 × 121.7 mm. It can be floor-standing or wall-mounted using a 600 × 400 mm VESA pattern with M6 fixings. Its rated operating temperature is 0 to 50 °C at 10 to 80% humidity, non-condensing. Summer temperatures in Doha often pass 45 °C, so the room must be air-conditioned and the units must not sit where sunlight or hot equipment raises the ambient temperature. Multi-unit walls need a site survey first to check the wall structure, cable routing and power circuits. The input supply is 100 to 240 V at 50/60 Hz, with typical consumption of 180 W per unit and 200 W at maximum.

Government ministries and schools can order through a purchase order (LPO) or a Monaqasat tender, and payment can be made by bank transfer, cheque or purchase order. SmartRooms Qatar delivers to all eight municipalities, offers professional installation, and usually issues quotations within one working day.

To request a quote for LS550KDH-UF units, send the number of panels, the wall layout (for example 2×2 or 3×3) and the mounting type. The SmartRooms Qatar team will return a quotation for your layout.

Highlights

1.7mm panel-bezel-to-panel-bezel seam for tiled walls
Industrial ADS panel rated for continuous 24/7 operation
700 cd/m² brightness with anti-glare surface
DP daisy chain: 4K@60Hz input, 4K@30Hz output
Infrared and RS232 control, with computer remote control
VESA 600×400 mm mount, floor-standing or wall-mounted

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- LS 5 50K DH - UF

Display14

Diagonal Size: 55"(16:9)
Panel Type: ADS
Resolution: 3840×2160 (UHD)
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: 700 cd/ m²
Contrast Ratio: 1200:1
Pixel Density: 80dpi
Viewing Angle: H178°, V178°
Response Time (G-to-G): 8ms
Color Depth: 1.07G (8Bits+FRC)
Color Temperature: 10,000K
Surface Treatment: Haze 25%, 3H
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.): 200W
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
Gross Weight: 34.3kg (75.6Ib)
Net Weight: 25.6kg (56.4Ib)
Product Dimension (W×H×D): 1211.3mm×682.1mm×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

5 files from the manufacturer

PDF Datasheets LS550KDH-UF_Datasheet_2023.12.pdf 682 KB PDF Manuals & guides Dahua LCD Display Wall Unit_Quick Start Guide_V1.0.5.pdf 2.1 MB PDF Manuals & guides LS550KDH-UF_INSTALLATION_METHOD_EN.pdf 818 KB PDF Drawings & CAD LS550KDH-UF_DIMENSIONS.pdf 588 KB DOCX Other documents LS550KDH-UF_A&E_20260902011810.docx 40 KB

Questions about LS550KDH-UF

Is the LS550KDH-UF suited to a boardroom or a lecture hall?

It suits rooms where a 55-inch panel fits the viewing distance, such as a smaller boardroom or a seminar room. For a large lecture hall with many seats, a bigger screen or a tiled array usually works better. Its 700 cd/m² brightness and anti-glare surface help when daylight enters the room. Send your room dimensions with your quote request and the SmartRooms Qatar team will advise on layout.

How narrow is the bezel and why does it matter for a video wall?

The LS550KDH-UF has a 1.7mm bezel measured from panel bezel to panel bezel, with 0.9mm on the top and left and 0.8mm on the bottom and right. Narrow joins keep the seams between screens less noticeable, so a wall of these units shows one image rather than separate monitors. The A2A active-area gap is 2.45mm, which is the figure to check if you compare with other brands.

Can I chain 4K signals from one unit to the next?

Yes, the unit has a DisplayPort daisy chain. It accepts up to 4K@60Hz through DP IN or HDMI 1, and sends up to 4K@30Hz through DP OUT to the next unit. The lower output rate is a limit to plan for: a chained signal leaving DP OUT runs at 4K@30Hz. Confirm your source and wall layout with the SmartRooms Qatar team before ordering.

Is the display rated for continuous 24/7 operation?

The manufacturer describes the ADS LCD panel as industrial grade and suitable for continuous 24/7 operation. The unit also has a rated MTBF of 50,000 hours and a professional thermal design intended to extend lifespan. These points matter for surveillance and control rooms that keep screens on around the clock, where a display that cannot run nonstop would be a poor choice.

How is the LS550KDH-UF controlled from a computer or control system?

It supports infrared and RS232 dual-mode control, and the manufacturer lists remote control by computer. The RS232 port appears as both an input and an output, so units can be daisy-chained for control as well as video. Operations staff can use a remote or a control system, which suits command centres in Doha that need one operator to manage several screens.

What power supply does the unit need and how much does it draw?

It accepts AC 100 to 240 V at 50/60 Hz, so Qatar's 240 V, 50 Hz mains falls within the supply range. Typical consumption is 180 W and maximum is 200 W, with standby below 0.5 W. For a multi-unit wall, add up the maximum draw per panel and check the circuit capacity with an electrician before installation, because a 4×4 array draws well over 3 kW at full load.

Will it cope with the summer heat in a Doha control room?

The rated operating range is 0 to 50 °C with 10 to 80% humidity, non-condensing. Summer temperatures in Doha often exceed 45 °C, so the room should be air-conditioned and units should not sit in direct sunlight or next to hot equipment. The source data does not describe an outdoor or dust rating, so keep the wall indoors and ask the SmartRooms Qatar team to confirm the environment.

What wall space and mounting do I need for a 2×2 or 3×3 array?

Each unit measures 1211.3 × 682.1 × 121.7 mm and weighs 25.6 kg net, 34.3 kg gross. It mounts floor-standing or on a wall using a 600 × 400 mm VESA pattern with M6 fixings. A 3×3 array needs a wall that can carry nine of these loads plus cable runs. A free site survey checks the structure before installation.

Can a surveillance centre in Doha use a 2×2 wall of these units for camera feeds?

Yes, four units in a 2×2 grid form a compact wall for operators watching multiple camera feeds. The 1.7mm bezel keeps the joins between screens narrow, the panel is rated for 24/7 operation, and the anti-glare surface helps where lighting is bright. Send the number of feeds, room size and seating layout to the SmartRooms Qatar team for a quotation.

Would a process control room at a plant in Mesaieed or Ras Laffan suit this unit?

It can suit a climate-controlled control room that displays plant status dashboards on a wall, as long as the room stays within the 0 to 50 °C operating range. The data does not list an industrial dust or ingress rating, so it should not be placed in dusty process areas. Confirm the exact environment with the SmartRooms Qatar team before specifying it.

Would a university research group in Education City use a single unit as a shared screen?

Yes, a single 55-inch unit works as a shared screen for a small research group or seminar room. It accepts HDMI and DisplayPort inputs, so laptops and a workstation can connect directly. Its 1,200:1 contrast ratio and 700 cd/m² brightness make it suitable for presenting data to colleagues joining from abroad, if the room is not overly bright.

Can a government ministry or school buy several units through an LPO or Monaqasat tender?

Yes, SmartRooms Qatar accepts purchase orders (LPOs) and supports government tenders, including Monaqasat. Payment can be made by bank transfer, cheque or purchase order. Send the number of units, the wall layout and the mounting type, and the team usually issues a quotation within one working day, so the paperwork can start quickly.