LDH55-HAI400L
Dahua LDH55-HAI400L 55-inch Indoor Wall-mounted LCD Digital Signage
- Screen size
- 55 inch
- Resolution
- 3840 (H) × 2160 (V)
- Brightness
- 700 cd/m² (typ.)
- System
- Android 11.0
The Dahua LDH55-HAI400L is a 55-inch 4K indoor LCD signage display for wall mounting and continuous use. It runs Android 11 on a quad-core processor with 32 GB storage, and playlists can be scheduled and managed remotely. With 700 cd/m² typical brightness and 178-degree viewing angles, it suits reception areas and corridors in Doha, Lusail and The Pearl. Request a quote.
A 55-inch wall display for continuous operation
The Dahua LDH55-HAI400L is a wall-mounted digital signage display from the Pro Series, built to act as a fixed information point that runs for long hours. Its 55-inch 16:9 screen is driven by a built-in Android player, so the player is part of the unit itself. The manufacturer describes the panel as industrial-grade and rates the unit for 24/7 operation.
Picture figures to check against your space
The panel resolves 3840 × 2160 pixels, which gives 4K detail across a screen 1,232.6 mm wide. Typical brightness is 700 cd/m², enough for a lit lobby or reception, but the data does not rate it for outdoor use. Surface haze of 25% softens reflections from ceiling lights and windows. Viewing angles are 178° horizontally and vertically, and the 8 ms response time suits moving video. The source lists IPS and VA variants with typical contrast of 1200:1 and 4000:1 respectively, so name the variant you need when requesting a quote.
Playback, decoding and remote management
Inside is a quad-core A55 processor at 1.92 GHz, with 4 GB RAM, 32 GB ROM and Android 11. It decodes H.265 HEVC and VP9 video up to 2160p at 60 fps, and H.264 up to 2160p at 30 fps. A TF card slot takes up to 128 GB of extra media. Programs can be scheduled by time and location, the split-screen layout can be rearranged to suit different content, and the unit generates operation reports. Its browser-based (B/S) platform architecture lets administrators push updates to the screen remotely.
Where it fits in Qatar
- Hotel lobbies in West Bay: a welcome and wayfinding loop that switches between a daytime and an evening schedule, set from the management platform.
- Clinic waiting areas in Al Sadd or Al Rayyan: queue information and health messages, with the screen placed away from direct sun inside an air-conditioned waiting room.
- Corridors and reception areas in a school in Al Wakrah: timetables and announcements, shown in portrait where a narrow wall suits it.
Planning the installation
The unit weighs 20.5 kg net and 25.3 kg gross, and its wall-mount bracket uses a 400 × 400 mm VESA pattern. Its thickness is 25.0 mm without the bracket and 27.5 mm with it. A free SmartRooms Qatar site survey will confirm wall construction, load and cable routes before fixing. The operating range is 0 to +40 °C with humidity from 10% to 85%, non-condensing, so choose an air-conditioned indoor wall away from direct sunlight, which matters when Qatar summer temperatures exceed 45 °C. Typical power use is 123 W, with 152 W maximum and standby at 0.5 W or less. The power input is 100–240 VAC, 50/60 Hz, which covers Qatar's 240 V mains. The box includes the bracket, a remote control, a user manual and regulatory documents. Certifications listed are CE EMC, CE LVD, CE ERP and RED, and the unit carries the manufacturer's warranty. Government and school buyers can order against an LPO or a Monaqasat tender. Request a quote with quantity, mounting location and panel variant, and the SmartRooms Qatar team will reply, usually within one working day.
Highlights
- 55-inch 4K panel at 3840 × 2160 resolution
- 700 cd/m² typical brightness and 178° viewing angles
- Android 11 with quad-core 1.92 GHz processor
- Decodes H.265 and VP9 up to 2160p at 60 fps
- HDMI 2.1 input, Gigabit Ethernet and Wi-Fi 802.11 ax
- 24/7 operation within 0 to +40 °C, away from sunlight
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
- 700 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%
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
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
- 1,232.6 mm × 703.4 mm × 25.0 mm (48.53" × 27.69" × 0.98") (L × H × W) (without bracket) 1,232.6 mm × 703.4 mm × 27.5 mm (48.13" × 27.35" × 1.08") (L × H × W) (with bracket)
- Frame Size
- 10.3 mm (0.41") (T/L/R/B)
- Packaging Dimensions
- 1,324 mm × 130 mm × 805 mm (53.4" × 5.9" × 33.6") (L × W × H)
- Net Weight
- 20.5 kg (45.19 lb)
- Gross Weight
- 25.3 kg (55.78 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
