Dahua 75″ 4K Display Smart Interactive Whiteboard

Description Dahua 75″ 4K Display Smart Interactive Whiteboard Dahua LCH75-MC410-B 75″ 4K UHD Smart Interactive Whiteboard, designed for collaborative environments such as classrooms and meeting rooms:  Display & Touch Technology Panel Size: 75 inches Resolution: 3840 x 2160 (4K UHD) Aspect Ratio: 16:9 Brightness: 350 cd/m² Viewing Angle: 178° horizontal / 178° vertical Backlight: DLED Touch Technology: Infrared (IR) Touch Points: 20 simultaneous points Response Time: <10 ms Writing Modes: Finger and stylus pen Touch Resolution: 32,767 x 32,767 Multi-user Writing: Supports up to 2 users simultaneously​ Built-in System Operating System: Android 9.0 CPU: Quad-core ARM Cortex-A55, 1.9 GHz GPU: Mali-G31 MP2 RAM: 4 GB Storage: 32 GB Wi-Fi: Dual-band 2.4 GHz / 5 GHz Wi-Fi Hotspot: Yes, supports simultaneous hotspot and Wi-Fi​ Connectivity & Ports USB Ports: 3 x USB 3.0, 1 x Micro USB Network Port: 1 x RJ-45 Video Input: 1 x HDMI Audio Output: 1 x 3.5 mm Line Out RS-232: 1 x RS-232 IR Receiver: 1 Microphone: 2 built-in omnidirectional microphones​ Camera Resolution: 5 MP Field of View: 84.5° horizontal / 54.0° vertical / 93.1° diagonal Auto White Balance: Yes Max Resolution: Android: 1080p @ 30 fps OPS (Optional PC Module): 2560 x 1440 @ 30 fps Distortion: ≤5%​ Audio & Microphone Speakers: 2 x 15W full-frequency speakers Microphone Pickup Distance: 6–8 meters Microphone Features: Automatic Gain Control (AGC) Echo Cancellation Intelligent Noise Filtering Omnidirectional Polar Pattern​ General Specifications Power Supply: 100–240 VAC, 50/60 Hz Power Consumption: 300 W Standby Power: 0.5 W Operating Temperature: 0°C to 40°C Storage Temperature: –10°C to 50°C Operating Humidity: 10%–90% RH Storage Humidity: 10%–90% RH Material: Metal casing with anti-dazzle tempered glass (hardness 7 on Mohs scale) Frame Color: Silver bottom; black top, left, and right Dimensions (W x H x D): 1,707.2 mm x 1,050.1 mm x 87.1 mm Weight: Net: 54 kg; Gross: 65 kg Mounting: Wall mount or mobile bracket (VESA 400 x 600 mm)​ Included Accessories Smart interactive whiteboard Power cords (3) Stylus pens (2) Quick start guide Wall mount bracket (pre-installed) Accessory package​