Digital signage flat panel Optoma N3551K 55 inch LED 4K Ultra HD

The Optoma N3551K is a 55" digital signage flat panel with LED display technology and 4K Ultra HD resolution (3840 x 2160). Designed for continuous 24/7 operation, the unit delivers 450 cd/m² brightness, a 6 ms response time and a 4000:1 typical contrast ratio. Running Android 11 and offering Wi‑Fi connectivity, the N3551K supports portrait and landscape orientations, built‑in speakers and VESA mounting for professional installation.

Advantages

The N3551K combines a high-resolution 4K LED panel with Android 11 to provide flexible content management and wireless connectivity. It includes a built-in media player, scheduling functionality and file-sharing capabilities via Optoma’s File Manager. CreativeCast™ Pro and Creative Board support wireless mirroring and real-time collaboration with compatible Optoma interactive displays. The display is engineered for signage and conferencing setups, with features such as low blue light, flicker-free technology and compatibility with webcams, Bluetooth speakers and motorised trolleys.

Suitable for (tasks / use cases)

• Digital signage in lobbies, retail and public areas
• Conference rooms and lecture halls
• Information displays and scheduled content playback
• Hybrid meetings and wireless screen sharing
• Corporate reception and wayfinding

Key specifications

• Model: Optoma N3551K (H1F2C0MBW101)
• Display size: 55" (flat)
• Resolution: 3840 x 2160 (4K Ultra HD)
• Display technology: LED
• Brightness: 450 cd/m²
• Response time: 6 ms
• Contrast ratio (typical): 4000:1
• Operating system: Android 11
• Connectivity: Wi‑Fi, wireless casting (CreativeCast™ Pro)
• Orientation: portrait and landscape
• Built-in speakers: yes
• VESA mounting: yes
• Colour: Black
• EAN: 5055387667495

How to use

Install the display using a VESA-compatible mount in the desired orientation, connect power and configure the network settings via the Android 11 interface. Use the built-in media player and scheduling tools to upload and schedule content, or connect devices wirelessly with CreativeCast™ Pro for screen mirroring. For collaborative workflows, pair the display with Optoma interactive panels and use Creative Board for real-time annotations; a keyboard and mouse are recommended to access full interactive functionality.

Recommendations

For reliable 24/7 operation, ensure adequate ventilation and follow the manufacturer’s installation guidelines. Use the Optoma Management Suite (OMS)™ to enable remote monitoring and diagnostics, and configure scheduled content playback to optimise display use in public and corporate environments.