LDH55-SAI400TL
Dahua LDH55-SAI400TL 55-inch Wall-mounted Touch Digital Signage
- Screen size
- 55 inch
- Resolution
- 3840 (H) × 2160 (V)
- Brightness
- 500 cd/m² (typ.)
- System
- Android 11.0
The Dahua LDH55-SAI400TL is a 55-inch indoor wall-mounted touch display built for continuous digital signage. It pairs a 4K panel with 500 cd/m² typical brightness, Android 11 with a quad-core processor, and 10-point capacitive touch. Two built-in 5 W speakers and Wi-Fi 802.11ax help it suit lobbies, clinic waiting areas and corridors across Doha, where a managed screen must stay live through the working day.
One wall-mounted unit for 4K signage and touch
The Dahua LDH55-SAI400TL combines a 55-inch 4K screen, an Android 11 playback system and a capacitive touch layer in a single indoor housing. Rather than fitting a separate media player, PC and display, a facilities team can mount one unit and manage its content from a central platform. The product is designed for 24/7 operation, which suits screens that must stay live through opening hours and beyond.
Panel, processing and touch performance
The 3840 × 2160 panel uses a 16:9 layout with 500 cd/m² typical brightness and viewing angles of 178° horizontally and vertically, so content stays readable from the side of a lobby or corridor. Contrast is listed at 1,200:1 typical for IPS and 4,000:1 typical for VA, and the panel shows 10-bit colour through 8-bit plus FRC processing. A quad-core A55 processor running at 1.92 GHz, backed by 4 GB of RAM and 32 GB of storage, decodes H.265 and H.264 video up to 4K. The 10-point capacitive touch layer supports multi-finger interaction for wayfinding maps, visitor directories and interactive menus.
Connections and built-in audio
Content can arrive through a 10/100/1,000 Mbps Ethernet port, Wi-Fi covering 802.11 a/b/g/n/ac/ax, a USB 2.0 port, a USB 3.0 port and a TF card slot that takes up to 128 GB. The HDMI 2.1 input accepts 4K at 60 Hz from an external source, and a 3.5 mm audio output lets you feed a larger sound system. Two built-in 5 W speakers cover announcements in small spaces. The display can run in landscape or portrait orientation, which helps with corridor directories and vertical menu boards.
Where it fits across Qatar
- Clinic waiting area in Al Sadd: a queue screen showing patient numbers and health awareness content, with the touch layer used for department directories.
- University building in Education City: a portrait-mounted timetable and room booking screen beside a lecture theatre entrance.
- Hotel lobby in West Bay: a rolling display of event schedules and dining offers, updated from one management platform across several floors.
What to plan before ordering
At 26.7 kg net, the unit is heavy for a plasterboard partition, so confirm wall construction and load capacity before mounting. A free site survey from SmartRooms Qatar can check this. The package includes a wall-mount bracket for a 400 × 400 mm VESA pattern. Depth is 28.8 mm without the bracket and 31.1 mm with it. Typical power draw is 123 W and maximum is 152 W, with standby at 0.5 W or less, so plan a circuit with capacity for several units. The power input is 100–240 VAC at 50/60 Hz, which covers the 240 V, 50 Hz supply used in Qatar. The operating range is 0 °C to +40 °C and the manufacturer advises avoiding direct sunlight. Summer temperatures in Qatar often exceed 45 °C, so install it in an air-conditioned indoor space away from windows and glass façades.
Ordering and quotation
Request a quote and the SmartRooms Qatar team will usually respond within one working day with a quotation covering the display, bracket and any extra mounting hardware. We supply and deliver to all eight municipalities of Qatar, arrange professional installation, and accept purchase orders (LPOs), government tenders and payment by bank transfer, cheque or purchase order. Tell us how many units you need and where they will be mounted so the quotation reflects your site.
Highlights
- 55-inch 3840 × 2160 panel with 500 cd/m² typical brightness
- 10-point capacitive touch with 178° viewing angles
- Android 11 with quad-core 1.92 GHz processor, 4 GB RAM
- HDMI 2.1 input, gigabit Ethernet and Wi-Fi 802.11ax
- Two built-in 5 W speakers and landscape or portrait mode
- Wall-mount bracket and remote control included in the box
Estimated timeline
Quotation within 1 working day · delivery timing depends on stock availability, and we confirm it with your quotation.
Specifications
LCD Panel11
- Screen Size
- 55 inch
- Backlight
- ELED
- LCD Technology
- IPS/VA
- Aspect Ratio
- 16:9
- Brightness
- 500 cd/m² (typ.)
- Contrast Ratio
- 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
- Surface Treatment
- Haze 25% (OC panel)
Built-in System5
- Operating System
- Android 11.0
- CPU
- 4 cores A55, 1.92 GHz
- RAM
- 4 GB
- ROM
- 32 GB
- Video Decoding
- H.265 HEVC MP-10@L5.1 up to 2160p@60 fps; H.264 AVC HP@L5.1 up to 2160p@30 fps; VP9 Profile 2 up to 2160p@60 fps; H.264 MVC up to 1080p@30 fps; MPEG-4 ASP@L5 up to 1080p@30 fps; 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 Ports7
- Network Port
- 1 × RJ–45 10/100/1,000 Mbps self-adaptive Ethernet port
- Wi-Fi Standard
- 802.11 b/g/n/a/ac/ax
- Wi-Fi Frequency Range
- 2400-2483.5 MHz, 5150-5350 MHz, 5470-5725 MHz, 5725-5850 MHz
- MAX Power Transmission (Wi-Fi)
- ≤20 dBm@2400-2483.5 MHz; ≤23 dBm@5150-5250 MHz; ≤20 dBm@5250-5350 MHz; ≤27 dBm@5470-5725 MHz; ≤14 dBm@5725-5850 MHz
- Data Transmission Ports
- 1 × USB 2.0 (type A); 1 × USB 3.0 (type A) 1 × TF card slot, up to 128 GB
- Video Input
- 1 × HDMI 2.1 (4K@60 Hz)
- Audio Port
- 1 × 3.5 mm jack output
Speaker1
- Built-in Speaker
- 2 × 5 W
Touchscreen3
- Response Time
- ≥8 ms
- Touch Technology
- Capacitive
- Touch Points
- 10 points
General18
- Power Supply
- 100–240 VAC, 50/60 Hz
- Power Consumption
- 123 W (typ.), 152 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
- Metal casing
- Casing Color (Frame/Rear)
- Black
- Product Dimensions
- 1,237.3 mm × 708.0 mm × 28.8 mm (48.71" × 27.87" × 1.13") (L × H × W) (without bracket) 1,237.3 mm × 708.0 mm × 31.1 mm (48.71" × 27.87" × 1.22") (L × H × W) (with bracket)
- Frame Size
- 14.2 mm (0.56") (T/L/R/B)
- Packaging Dimensions
- 1,324 mm × 130 mm × 805 mm (53.4" × 5.9" × 33.6") (L × W × H)
- Net Weight
- 26.7 kg (58.86 lb)
- Gross Weight
- 31.5 kg (69.45 lb)
- Wall Mount VESA
- 400 mm × 400 mm (15.75" × 15.75")
- Installation
- Wall mount
- Display Mode
- Landscape/Portrait
- Accessory
- Wall-mount bracket, user manual, legal and regulatory information, energy label, remote control
Certification1
- Certifications
- CE EMC, CE LVD, CE ERP, RED
