Dahua LCH75-MC410-B 75 Inches Smart Interactive whiteboard

Operating System

Android 14

CPU

Quad-core A55

CPU Frequency

1.9 GHz

GPU

ARM Mali-G52 MP2 (2EE)

RAM

4 GB

ROM

32 GB

NFC

No

Function

Operating System of External Module

Windows 7/8/10/11

Wireless Access Point

YES

IR Receiver

1

LCD Panel

Screen Size

75 inch

Backlight

DLED

Aspect Ratio

16:9

Brightness

350 cd/m² (typ.)

Resolution

3840 × 2160

Viewing Angle

H: 178°; V: 178°

Lifespan

≥50, 000 hrs

Display Color

≥72% NTSC

Refresh Rate

60 Hz

Static Contrast Ratio

IPS: 1200 (typ.)

Response Time

≤8 ms (typ.)

Camera

Camera

Android: Photo: 48 MP; Video: 4 MP
Windows: Photo: 4 MP; Video: 4 MP

Auto Control

Auto white balance

Distortion

≤5%

Max. Resolution

2560 × 1440@30 fps

Field of View

D: 88°, H: 79°, V: 51°

Face Detection

No

Device Ports

Light Sensor

1

Front Button

1 × power button

Front Ports

1 × USB 2.0

Rear Port

1 × USB 3.2 Gen1 Type-A; 1 × USB 2.0 Type-A; 1 × Micro USB 2.0; 1 × DB9 male connector; 2 × HDMI 2.0 IN(4K@60 Hz); 1 × RJ-45; 1 × 3.5 mm Line out port; 1 × Touch port;1 × Type-C(USB 2.0 device + 5 W charging)

Wi-Fi

Yes, 1 × Station, 1 × AP

Wi-Fi Standard

Station: 802.11b/g/n/a/ac/ax
AP: 802.11b/g/n/a/ac/ax

Wi-Fi Frequency Range

2400–2483.5 MHz, 5150–5350 MHz, 5470–5725 MHz, 5725–5850 MHz

MAX Power Transmission (Wi-Fi)

≤20 dBm@2400–2483.5 MHz; ≤23 dBm@5150–5250 MHz; ≤20 dBm@5250–5350 MHz; ≤27 dBm@5470–5725 MHz; ≤14 dBm@5725–5850 MHz

Bluetooth

Yes

Bluetooth Standard

BR/EDR/BLE, BT5.2

Bluetooth Frequency Range

2400–2483.5 MHz

MAX Power Transmission (Bluetooth)

≤20 dBm@2400–2483.5 MHz

Others

1× Touch port

Microphone

8 arrays

Touchscreen

Touch Technology

Infrared

Attachment Method

Non-Lamination

Touch Points

Android: 32 points, Windows: 40 points

Valid Touch

2 mm (0.1″) (over 90% touch area)

Writing Mode

Finger + Pen (attaches magnetically)

Touch Height

≤0.99 mm (Average)

Anti-light Interference

Anti-dazzle tempered glass

Surface Hardness

≥9H

Touch Resolution

32767 × 32767

Speaker

Frequency

150 Hz–20 kHz

Power

2.0 sound channel, front-end: 2 × 15 W

Built-in Speaker

2

Microphone

Pick-up Distance

Long-range sound pickup: 8 m–12 m (26.25 ft–39.37 ft)

Number of Microphones

8 arrays

AGC

Yes

Echo Cancellation

Yes

Polar Pattern

Omnidirectional

Intelligent Noise Filtering

YES

General