DAHUA LPH75-ST420

Built-in System

Operating System

Android 11

CPU

Quad-core A55

CPU Frequency

1.9 GHz

GPU

ARM Mali-G52 MP2 (2EE)

RAM

8 GB (optional 4 GB)

ROM

64 GB (optional 32 GB)

LCD Panel

Panel Dimensions

65 inch; 75 inch; 86 inch

Backlight

DLED

Aspect Ratio

16:09

Brightness

400 cd/m² (typ.)

Contrast

VA: 4000; IPS: 1200

Resolution

3840 × 2160

Viewing Angle

178° (H) / 178° (V)

Lifespan

50,000 hours

Display Color

1.07 B

Response Time

8 ms (typ.)

Refresh Rate

60 Hz

Device Ports

Light Sensor

Yes

Front Button

8 buttons (power, home, menu, signal source, touch lock, curtain, volume, and annotation)

Front Ports

Type C × 1 (4K@60 Hz, Touch)
HDMI In × 1 (4K@60 Hz)
USB 3.0 Type-B × 1 (Touch)
USB 3.0 Type A × 2
Mic In × 1 (3.5 mm port)

Rear Port

Type C × 1 (4K@60 Hz, Touch) 
HDMI In × 2 (4K@60 Hz)
VGA In × 1 (1080p@60 Hz)
USB 3.0 Type-B × 3 (Touch)
HDMI Out × 1
USB 3.0 Type A × 2
Micro USB × 1
RS-232 × 1
RJ45 In × 1
RJ45 Out × 1
Audio In × 1 (3.5 mm port, used to play sound with VGA)
Audio Out × 1 (3.5 mm port)
SPDIF Out × 1 (Optical port)
OPS slot × 1

Function

IR Receiver

Yes

Bluetooth

Bluetooth 5.2

Wi-Fi

WIFI 5, 2.4 GHz/5 GHz; Integrated WiFi 802.11 b/g/n/ac, supports PEAP/EAP-GTC authentication protocol within 802.lX

Wireless Access Point

WIFI 5, 2.4 GHz/5 GHz; Supports enabling Hotspot and Wi-Fi at the same time

Touchscreen

Touch Technology Type

Infrared touch technology

Attachment Method

Zero Air Gap

Response Time

≤10 ms

Touch Points

Android: 32, Windows: 40

Touch Accuracy

± 1 mm (over 90% Area)

Valid Touch

2 mm

Touch Height

<2.5 mm

Writing Mode

Finger + Pen (attaches magnetically)

Communication Mode

USB

Anti-light Interference

Anti-dazzle tempered glass

Surface Hardness

8H

Touch Resolution

32767 × 32767

Speaker

Built-in Speaker

2

Power

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

General

Power Supply

100–240 VAC, 50/60 Hz

Power Consumption

65-inch: 120 W (typ.); 200 W (max.)
75-inch: 150 W (typ.); 300 W (max.)
86-inch: 200 W (typ.); 400 W (max.)

Standby Power Consumption

≤0.5 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

Glass

4 mm Anti-dazzle tempered glass

Casing Color (Frame/Rear)

Bottom/top: Silver; left/right: black; back: black

Product Dimensions

65-inch: 1,485.2 mm × 93.0 mm × 924.5 mm 

(58.47" × 3.66" × 36.40")
75-inch: 1,707.5 mm × 93.0 mm × 1,050.0 mm (67.22" × 3.66" × 41.34")
86-inch: 1,953.2 mm × 93.0 mm × 1,187.9 mm (76.90" × 3.66" × 46.77")

Packaging Dimensions

65-inch: 1,580.0 mm × 200.0 mm × 1030.0 mm (62.20" × 7.87" × 40.55")
75-inch: 1,800.0 mm × 200.0 mm × 1,165.0 mm (70.87" × 7.87" × 45.87")
86-inch: 2,050.0 mm × 200.0 mm × 1,310.0 mm (80.71" × 7.87" × 51.57")

Net Weight

65-inch: 40 kg (88.19 lb)
75-inch: 52 kg (114.64 lb)
86-inch: 68 kg (149.92 lb)

Gross Weight

65-inch: 50 kg (110.23 lb)
75-inch: 65 kg (143.30 lb)
86-inch: 82 kg (180.78 lb)

Holes Distance

65-inch: 500 mm × 400 mm (19.69" × 15.75")

75-inch: 600 mm × 400 mm (23.62" × 15.75")

86-inch: 800 mm × 400 mm (31.50" × 15.75")

Installation

Wall mount; mobile bracket

Packing List

Smart interactive whiteboard × 1
Power cord × 1
Passive stylus pen × 2
HDMI cable × 1
Quick start guide × 1
Wall mount bracket (already installed on the whiteboard) × 1
Accessory package × 1
Remote control × 1
Legal and Regulatory Information × 1

Certification

Certifications

CE, CB, Energy Star, ERP, RoHS, WEEE