LG 55UL3J‑M 55″ 4K UHD Digital Signage Display

The LG 55UL3J‑M (55UL3J‑M.AEK) is a versatile 55‑inch digital signage display engineered for commercial digital communication. Featuring 4K Ultra HD (3840 × 2160) resolution and an IPS‑type ADS panel, it delivers crisp, vivid visuals with wide 178° viewing angles that keep content clear from nearly any approach. The 400 cd/m² brightness ensures your messaging remains impactful in typical indoor environments.

Powered by LG’s webOS 6.0 smart platform with 16 GB eMMC storage, this display includes built‑in apps, content scheduling, and compatibility with SuperSign CMS, SuperSign Control+, SuperSign WB and other management systems. The Pro:Idiom support simplifies integration with secure content distribution systems. Connectivity options include HDMI, USB, Wi‑Fi and LAN, making it easy to deploy dynamic signage solutions.

Designed for 16/7 commercial operation, the UL3J‑M Series offers portrait and landscape orientation support, SNMP control, and robust compatibility with AV control systems. Its sleek, slim‑bezel design and dual built‑in 10 W speakers make it a complete professional digital signage solution for environments like stores, offices, museums and transit hubs.

Key Features & Benefits

• 55″ 4K Ultra HD Display — Crisp 4K resolution for impactful signage messaging.

• webOS Smart Platform — Built‑in operating system with app support and 16 GB storage.

• Integrated Pro:Idiom — Secure content support for protected media distribution systems.

• 400 cd/m² Brightness — Clear visuals in typical indoor lighting.

• Multiple Connectivity — 3× HDMI, 2× USB, LAN, Wi‑Fi; RS‑232 control.

• Commercial‑Grade Design — 16/7 operation, VESA mounting, portrait/landscape support.

• Built‑in Speakers — Dual 10 W audio for announcements or media.

Specifications (At a Glance)

• Model: 55UL3J‑M.AEK

• Screen Size: 55″ (139.7 cm)

• Resolution: 3840 × 2160 (4K UHD)

• Panel Type: ADS (Direct LED)

• Brightness: 400 cd/m² (typical)

• Viewing Angle: 178°/178°

• Operating Hours: 16/7

• Inputs: HDMI ×3, USB ×2, LAN, Wi‑Fi, RS‑232

• Built‑in Storage: 16 GB eMMC

• Speakers: 2× 10 W

• Mounting: VESA 300 × 300 mm

• Platform: webOS 6.