LDH43-SAI400L V2

A 43-inch wall display built for scheduled 4K content

The Dahua LDH43-SAI400L V2 is an indoor LCD signage display in the 43-inch class, designed for wall mounting and for playing content without a separate media player. Its 3840 × 2160 panel uses a 16:9 aspect ratio and can be turned to portrait orientation for menu boards, wayfinding columns and queue information. Because the Android 11 player sits inside the housing, installation means one cable run to the screen rather than a screen plus a box hidden behind it.

Panel and processing: what the figures mean on site

The panel is rated at 500 cd/m² typical brightness, a practical level for indoor lobbies and corridors with ambient light. Contrast is listed as 1200:1 for IPS and 4000:1 for VA, so confirm the panel variant when comparing it with another model. Viewing angles are 178° horizontally and vertically, and a 25% haze surface treatment reduces glare from overhead lighting. A quad-core A55 processor at 1.92 GHz, 4 GB RAM and 32 GB storage run the Android system. The decoder supports H.265 HEVC and VP9 up to 2160p at 60 fps, and H.264 up to 2160p at 30 fps.

Connectivity, playback and remote management

The unit has one Gigabit RJ-45 port (10/100/1,000 Mbps, self-adaptive) and Wi-Fi covering 802.11 b/g/n/a/ac/ax. A single HDMI 2.1 input accepts 4K at 60 Hz, while two USB ports (USB 2.0 and USB 3.0, type A) and a TF card slot up to 128 GB provide local media options. Playback runs in multiple modes, and the split-screen layout can be rearranged to show, for example, a timetable beside a promotional feed. The device uses a B/S architecture, so the platform can schedule programmes by time and location, generate operation reports and control each display remotely.

Where it fits across Qatar

• Government reception in Msheireb: visitor directions and service queue information on a 43-inch screen beside the lift lobby, updated from one office.
• Clinic in Al Sadd: waiting-room health messages and appointment information scheduled by time of day.
• Hotel lobby in West Bay: event listings and dining menus, with the screen placed away from direct sunlight and glazing.
• University building in Education City: room timetables and notices, with separate content for each floor.

Planning the wall, power and environment

Measure before ordering. The panel is 964.6 mm wide and 552.9 mm high, 25.0 mm deep without the bracket and 27.5 mm with it. Net weight is 13.0 kg (16.5 kg gross), and the VESA pattern is 400 × 400 mm. The wall-mount bracket and remote control are included. Power input is 100–240 VAC at 50/60 Hz, which covers Qatar's 240 V, 50 Hz supply. Typical draw is 100 W, peaking at 125 W, with standby at 0.5 W or less, so plan circuits for several units around that peak.

Environment matters more than many buyers expect. 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 mount the display indoors in an air-conditioned space, away from windows facing the afternoon sun, and confirm room conditions with the SmartRooms Qatar team before installation. The unit carries CE EMC, CE LVD, CE ERP and RED certification marks as listed in its source data. A free site survey lets us check wall structure, cable routes and sun exposure before any drilling.

Quotations are usually issued within one working day. Public bodies and schools ordering several units can raise a purchase order (LPO), and payment can be made by bank transfer, cheque or purchase order. Request a quote with your quantity and proposed mounting locations, and we will confirm the configuration and next steps.