Dahua LCH75-MC410-B 75 Inches 4K Display Smart Interactive Whiteboard , Android and Windows Support, Multiple Devices Wireless Sharing, Network Support Touchscreen Monitor
Built-in System
Operating System of External Module
Android 9.0
CPU
Quad-core A55
CPU Frequency
1.9 GHz
GPU
Mali-G31 MP2
RAM
4 GB
ROM
32 GB
Function
Applicable Operating Systems
Windows 7/8/10; Android
Wi-Fi
Dual-band 2.4 Ghz/5 Ghz
Wi-Fi Hotspot
Dual-band 2.4 Ghz/5 Ghz; supports enabling hotspot and Wi-Fi at the same time
LCD Panel
Panel Dimensions
75-inch
Backlight
DLED
Aspect Ratio
16:9
Brightness
75-inch: 350 cd/m²
Resolution
3840 (H) × 2160 (V)
UI: 1920 (H) × 1080 (V)
Viewing Angle
H: 178°; V: 178°
Lifespan
50,000 hours
Refresh Rate
60 Hz
Static Contrast
1200:1
Camera
Pixel
5 MP
Auto Control
Auto white balance
Distortion
≤ 5%
Max. Resolution
Android: 1080p@30fps; OPS: 2560 × 1440@30fps
Field of View
H:84.5°; V: 54.0°; D: 93.1°
Device Ports
Light Sensor
1
Front Button
1 × Power button (right side)
Front Ports
1 × USB 3.0 (left side)
Network Port
1 × RJ-45
Wi-Fi
1 × Wi-Fi; 1 × hotspot
USB
3 × USB 3.0; 1 × Micro USB
RS-232
1 × RS-232
Video Input
1 × HDMI IN
Audio Output
1 × 3.5 mm (Line out)
Others
1 × Touch
IrDA
1
Microphone
2
Touchscreen
Touch Technology Type
IR touch technology
Response Time
< 10 ms
Touch Points
20
Valid Touch
2 mm
Writing Mode
Finger + Stylus pen
Touch Resolution
32767 × 32767
Number of Multi-user Writing Points
2
Speaker
Power
Full frequency: 2 × 15 W
Built-in Speaker
2
Microphone
Pick-up Distance
Far-field sound pickup: 6 m–8 m (19.69 ft–26.25 ft)
Number of Microphones
2
AGC
Yes
Echo Cancellation
Yes
Polar Pattern
Omnidirectional
Intelligent Noise Filtering
YES
General
Power Supply
100–240 VAC, 50 Hz/60 Hz
Power Consumption
300 W
Operating Temperature
0 °C to +40 °C (32 °F to +104 °F)
Storage Temperature
–10 °C to +50 °C (–14 °F to +122 °F)
Operating Humidity
10%–90% (RH)
Storage Humidity
10%–90% (RH)
Product Material
Metal casing
Protective Glass
Anti-dazzle tempered glass with a hardness of 7 on the Mohs scale
Casing Color (Frame/Rear)
Bottom: Silver; top/left/right: black
