DAHUA LPH75-ST420-S3 75 inch Smart interactive whiteboard

Built-in System

Operating System

Android 14

CPU

Quad-core A55

CPU Frequency

1.9 GHz

GPU

ARM Mali-G52 MP2 (2EE)

RAM

8 GB

ROM

32 GB

LCD Panel

Panel Dimensions

75 inch

Backlight

DLED

Aspect Ratio

16:9

Brightness

400 cd/m² (typ.)

Static Contrast

VA: 4000; IPS: 1200

Resolution

3840 (H) × 2160 (V)

Viewing Angle

178° (H); 178° (V)

Lifespan

50,000 hrs

Display Color

1.07 Billion colors (10 Bit)

Response Time

8 ms (typ.)

Refresh Rate

60 Hz

Device Ports

Light Sensor

Yes

Front Button

8 buttons: Whiteboard, volume,

curtain, touch lock, signal source, navigation bar, homepage, power supply

Front Ports

1 × Type -C

1 × HDMI IN

1 × USB Touch

2 × USB 3.2 Gen1 Type-A

1 × 3.5 mm Mic in

1 × Type-C (DP IN (4K@60 fps) + USB 3.0 Host+USB 2.0 device (touch) + PD 65 W); supports wired network sharing

Rear Port

1 × Type -C

2 × HDMI IN (4K@60 Hz)

1 × VGA IN

1 × HDMI OUT (4K@60 Hz)

3 × USB Touch

2 × USB3.2 Gen1 Type-A

Audio In: 1 × 3.5 mm Line In

Audio Out: 1 × SPDIF and 1 × 3.5 mm Line out

RS-232: 1 × DB9 port

Micro: 1 × USB

2 × RJ-45

1 × OPS slot

Wi-Fi

Yes

Wi-Fi Standard

802.11b/g/n/a/ac/ax

Wi-Fi Frequency Range

2.4 GHz/5 GHz

MAX Power Transmission (Wi-Fi)

CE EIRP:

≤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

EDR, BT2.1/4.2/5.2/5.3

Bluetooth Frequency Range

2400–2483.5 MHz

MAX Power Transmission (Bluetooth)

CE EIRP:

≤20 dBm@2400–2483.5 MHz;

RFID Modulation Method

ASK

RFID Frequency Range

13.56 MHz

MAX Power Transmission (RFID)

42 dBuA/m @10 m

Function

IR Receiver

1

Card Swiping with NFC

Yes

Wireless Access Point

WIFI 5, 2.4 GHz/5 GHz; Supports enabling Hotsport and WIFi at the same time₩Wi-Fi 6, 2.4 GHz/5 GHz, supports 802.11 a/b/g/n/ac/ax

Touchscreen

Response Time

＜10 ms

Touch Technology

Infrared

Attachment Method

Zero Air Gap

Touch Points

21 points for Android, and 40 points for Windows

Touch Accuracy

±1 mm (0.04")

Valid Touch

2 mm (0.08")

Touch Height

3 mm (0.12")

Writing Mode

Finger and stylus pen

Communication Mode

USB

Anti-light Interference

Anti-dazzle

Surface Hardness

≥9 H

Touch Resolution

32,767 × 32,767

Speaker

Built-in Speaker

2 × full-frequency speaker

Power

2.0 sound channel, front-end: 2 × 15 W₩2.0 sound channel, front-end: 2 × 20 W

General

Power Supply

100–240 VAC, 50/60 Hz

Power Consumption

75-inch: 150 W (typ.); 275 W (max, without OPS and Quicker Changer）

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)

Black frame for left and right, silver frame for top and bottom and black frame for back

Product Dimensions

1,707.5 mm × 121.3 mm × 1,050.0 mm (67.23" × 4.48" × 41.34") (L × W × H)

Frame Size

Top frame: 27 mm (1.06"); Left and right frame: 16.5 mm (0.65"); Bottom frame: 68 mm (2.68")

Packaging Dimensions

1,790.0 mm × 200.0 mm × 1,165.0 mm (70.47" × 7.87" × 45.87") (L × W × H)

Net Weight

49.0 kg (108.03 lb)

Gross Weight

60.5 kg (133.38 lb)

Holes Distance

600 mm × 400 mm (23.62" × 15.75")

Installation

Wall mount or mobile bracket

Packing List

1 × Smart interactive whiteboard;

1 × Power cord;

2 × Passive stylus pen;

1 × HDMI cabe;

1 × Quick start guide;

1 × Wall mount bracket (already installed on the whiteboard);

1 × Accessory package;

1 × Remote control;

1 × Legal and Regulatory Information

Certification

Certifications

CE