Digital signage flatscreen Optoma N3751K 75 inch LED 4K Ultra HD

The Optoma N3751K is a 75" digital signage flat panel with LED backlight and 4K Ultra HD resolution (3840 x 2160). Designed for professional environments, it delivers 450 cd/m² brightness, a 1200:1 contrast ratio and 8 ms response time. The display supports portrait and landscape mounting, runs Android 11 for on-board apps and scheduling, and is intended for continuous 24/7 operation in lobbies, meeting rooms, lecture halls and other public spaces.

Advantages

The N3751K provides high-resolution 4K image quality with sufficient brightness for many indoor locations, built-in speakers and an integrated media player for playlist creation and scheduled playback. It supports wireless sharing with CreativeCast Pro, cloud access via file manager, and collaboration with Optoma’s Creative Board when paired with interactive panels. The panel is VESA-compatible for flexible installation and includes device management support through Optoma Management Suite for remote monitoring and maintenance.

Suitable for

• Corporate lobbies and reception areas
• Digital signage and advertising displays
• Conference rooms and meeting spaces
• Lecture halls and classrooms
• Retail stores and public information kiosks

Key specifications

• Model: Optoma N3751K (MPN H1F2C0GBW101, EAN 5055387666863)
• Display diagonal: 75"
• Resolution: 3840 x 2160 (4K Ultra HD)
• Display technology: LED
• Brightness: 450 cd/m²
• Contrast ratio (typical): 1200:1
• Response time: 8 ms
• Orientation: portrait and landscape (VESA mountable)
• Operating system: Android 11
• Speakers: built-in
• Colour: Black
• Designed for 24/7 operation

How to use

Mount the display using a compatible VESA bracket in either portrait or landscape orientation. Power on the unit and complete the Android 11 initial setup to configure network access and user accounts. Use the built-in media player to create and schedule playlists, or connect devices wirelessly via CreativeCast Pro to mirror content. For collaborative sessions, pair with Optoma interactive panels and use Creative Board; a keyboard and mouse may be required for full interactive functionality. Access cloud storage services through the File Manager app to upload and manage files remotely.

Recommendations

Install the display in a well-ventilated location and ensure it is connected to a stable network for remote management via Optoma Management Suite. For best readability, position the panel away from direct sunlight and use scheduled brightness and content playlists appropriate for your venue’s operating hours. Regularly update apps and firmware through the device settings to maintain security and performance.