The LMM390001 is a 39-inch square format LCD monitor designed for commercial and industrial applications. With its unique 1:1 aspect ratio, this display is ideal for digital signage, advertising kiosks, square video walls, museum exhibits, restaurant menus, and retail displays. Powered by a robust RK3288 quad-core processor and Android 5.1.1, it offers both standalone interactivity and reliable 24/7 operation.

Key Features

Square Display for Creative Content

1900 x 1900 resolution – crisp, detailed visuals

706.8mm x 706.8mm active area – true square format

5000:1 contrast ratio – deep blacks and vibrant colors

350 cd/m² brightness – clear visibility in indoor environments

High-Performance Hardware

RK3288 quad-core CPU @ 1.8GHz

2GB RAM + 8GB storage (expandable up to 4GB/64GB)

Android 5.1.1 – flexible app installation and remote management

Rich Connectivity

2 x USB HOST + 5 x USB pins

4 x serial ports (2 x TTL + 2 x RS232)

HDMI output – supports 4K2K @60Hz

Ethernet + Wi-Fi

SD card slot for local upgrade and media playback

Multimedia Support

Video formats: WMV, AVI, FLV, RM, RMVB, MPEG, TS

Image formats: BMP, JPEG, PNG, GIF

Built-in dual speakers (2 x 20W / 8Ω 10W)

Durable & Customizable

Black fine-sand texture metal housing

Dimensions: 736 x 736 x 60 mm

Weight: 17 kg

Operating temperature: 0°C to 50°C

Customizable options: brightness, external interfaces, frame color

Parameter	Details
Model	LMM390001
Screen Size	39 inch
Aspect Ratio	1:1 square
Resolution	1900 x 1900 px
Brightness	350 cd/m²
Contrast Ratio	5000:1
Power Input	AC 110–240V
Max Power	≤120W
Standby Power	≤1W
Operating Temp	0°C ~ 50°C
Storage Temp	-20°C ~ 50°C
Humidity	10%~80% RH