Dahua 75-inch 4K Smart Interactive Whiteboard (LCH75-MC410-B)

The Dahua 75-inch 4K Smart Interactive Whiteboard is a professional collaboration display designed for education, corporate meetings, and interactive presentations. Featuring a 3840 x 2160 Ultra HD resolution, it delivers sharp and detailed visuals suitable for presentations, video conferencing, and multimedia content. With built-in Android system support, optional Windows compatibility, and wireless screen sharing from multiple devices, it functions as a complete digital collaboration hub. The IR touch technology supports smooth multi-user writing with stylus or finger input, while the integrated 5MP camera, microphones, and speakers enable seamless hybrid communication and remote collaboration.

Product Features

75-inch 4K Ultra HD Display Clarity

The 4K UHD resolution of 3840 x 2160 delivers highly detailed and sharp visuals on a large 75-inch screen. This makes it ideal for presentations, classroom teaching, and business meetings where clarity is essential.

Interactive IR Touch Technology

The IR touch system supports up to 20 touch points with fast response and high accuracy. Users can write, draw, and interact directly on the screen using a stylus or finger, enabling collaborative work and engaging presentations.

Built-in Android Smart System

The integrated Android 9.0 system allows direct access to apps, office tools, media playback, and browsing without requiring an external computer. This enhances flexibility and ease of use in various environments.

Wireless Multi-Device Screen Sharing

The whiteboard supports wireless screen sharing from laptops, smartphones, and tablets. This enables seamless content sharing during meetings and improves collaboration efficiency across multiple devices.

Integrated 5MP Camera for Video Conferencing

The built-in 5MP camera supports high-quality video conferencing with up to 1080p output. Combined with far-field microphones, it enables smooth hybrid meetings and remote communication.

Dual Speaker and Microphone System

With dual 15W speakers and omnidirectional microphones, the system delivers clear audio output and effective voice capture. Echo cancellation and noise filtering improve communication clarity in meetings.

Multi-Platform Compatibility

The device supports both Windows and Android systems, allowing flexible integration with external PCs or OPS modules. This ensures compatibility with a wide range of enterprise and educational environments.

Anti-Glare Tempered Glass Surface

The anti-dazzle tempered glass with high hardness rating ensures durability and reduced reflections. It provides a comfortable viewing and writing experience even in brightly lit rooms.

Product Specifications

• Model: LCH75-MC410-B
• Display size: 75 inches (available variants: 55, 65, 75, 86 inches)
• Resolution: 3840 x 2160 (4K UHD)
• Aspect ratio: 16:9
• Panel type: DLED backlit LCD
• Brightness: 350 cd/m² (75-inch model)
• Contrast ratio: 1200:1
• Refresh rate: 60Hz
• Viewing angles: 178° horizontal / 178° vertical
• Lifespan: 50,000 hours
• Operating system: Android 9.0
• CPU: Quad-core A55 (1.9 GHz)
• GPU: Mali-G31 MP2
• RAM: 4GB
• ROM: 32GB
• Connectivity: Wi-Fi (2.4GHz/5GHz), hotspot support, RJ-45 Ethernet, RS-232, HDMI IN, USB 3.0, Micro USB, 3.5mm audio out, IRDA
• USB ports: 3 x USB 3.0 + 1 x Micro USB
• Touch technology: IR touch
• Touch points: Up to 20
• Touch response time: <10 ms
• Touch resolution: 32767 x 32767
• Writing support: Finger and stylus input
• Camera: 5MP integrated camera
• Camera resolution: Up to 1080p (Android), 2560 x 1440 (OPS)
• Field of view: H 84.5°, V 54°, D 93.1°
• Microphones: 2 built-in far-field mics
• Audio: 2 x 15W full-range speakers
• Audio features: AGC, echo cancellation, noise filtering
• Power supply: 100–240V AC
• Power consumption: 300W (75-inch model)
• Standby power: 0.5W
• Operating temperature: 0°C to 40°C
• Storage temperature: -10°C to 50°C
• Operating humidity: 10% to 90% RH
• Installation: Wall mount or mobile bracket
• VESA mounting: 400 x 600 mm (75-inch)
• Material: Metal casing with anti-dazzle tempered glass
• Dimensions (75-inch with camera): 1707.2 x 87.1 x 1066.4 mm
• Net weight (75-inch): 54 kg
• Gross weight (75-inch): 65 kg
• Included accessories: Power cord, 2 stylus pens, quick start guide, wall mount bracket, accessory package