Dahua LCH75-MC410-B 75 Inches 4K Display Smart Interactive Whiteboard Network Support Touchscreen Monitor

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