LG 55UR340C9UD Series 55" 4K HDR LED Commercial TV

LG UR340C Overview

The UR340C Series 55″ 4K HDR LED Commercial TV from LG is designed for businesses, delivering workers and guests with signage and content at a stunning 4K resolution. Supporting HDR10 technology, what you choose to display can enjoy more intense coloring and deeper blacks. This display easily fits into most commercial spaces, with a space-fitting slim design that’s meant to seamlessly blend in with its surroundings. Various technologies built into the display allow for custom signage, remote management, power management, and content migration.

Key Features

• 4K UHD (3840 x 2160) Native Resolution
• HDR10 Compatibility
• 14 ms Response Time
• 400 cd/m² Brightness

Customizable Screen

The UR340C series allows for a variation of greeting messages to make customers feel more welcome and cared for. Also, if there is no input signal, it is possible to show the content preset by the user instead of the conventional “No Signal” message.

Compatibility with AV Control Systems

The UR340C series has been certified Crestron Connected, which means it has a high level of compatibility with professional AV controls. This results in virtually seamless integration and automated control, boosting business management efficiency.

USB Auto Playback

USB data cloning makes managing multiple displays efficient for optimal operation. Instead of setting up each display one by one, data can be copied to a USB drive for one display, and then that data will be sent to the other displays through a USB plug-in.

DPM (Display Power Management)

DPM can be configured to be on only when there is a TV signal present to manage power more efficiently.

Time Scheduler

Create your own time scheduler on your TV. Once you set opening/closing hours and holidays, the TV will turn on/off according to work schedule.

SuperSign Control

SuperSign Control is a basic control application that lets you manage up to 100 displays through a single account and server. Power, volume, and scheduling can be remotely adjusted, and firmware updates are also supported.

LG UR340C Specs

Display

Screen Size (Diagonal)	55″
Resolution	3840 x 2160
HDR Compatibility	HDR10, Hybrid Log Gamma
Brightness	400 cd/m²
Aspect Ratio	16:9
Contrast Ratio	1300:1
Dynamic Contrast Ratio	1,000,000:1
Response Time	14 ms (GtG)
Refresh Rate	60 Hz
Pixels Per Inch (ppi)	80 ppi

Connectivity

Input Ports	3 x HDMI 2.0 Audio, Video 1 x RF Antenna Video
Output Ports	1 x TOSLINK Optical – Audio
USB Ports	1 x USB (Version Unspecified) – Service
Ethernet Ports	1 x RJ45 (Unspecified Ethernet)
Control	IR, RS-232C
Other I/O	1 x RS-232C Control Output

General

TV Tuner	Yes – ATSC, Clear QAM
Display Orientation	Landscape

Audio

Built-In Speakers	Yes, 2 x 10 W
Speaker Configuration	2.0-Channel

Convenience

Analog Video Formats

NTSC

Electrical

Power Consumption	Maximum: 165.0 W Typical: 135.3 W Standby: 0.5 W
AC Input Power	120 VAC, 60 Hz
Power Adapter Type	Internal

Environmental

Certifications

EPEAT, FCC, TAA, UL, as per Manufacturer

Physical

Wall Mounting	300 x 300 mm
Lock Slot	Yes, Kensington
Bezel Thickness	12.8 mm (Right/Top/Left) 19.9 mm (Bottom)
Duty Cycle	16 Hours / 7 Days
Dimensions	48.6 x 30.4 x 9.1″ / 1234.4 x 772.2 x 231.1 mm (with Stand) 48.6 x 28.1 x 2.3″ / 1234.4 x 713.7 x 58.4 mm (without Stand)
Weight	31.3 lb / 14.2 kg (with Stand) 30.9 lb / 14.0 kg (without Stand)

Packaging Info

Package Weight	40 lb
Box Dimensions (LxWxH)	56 x 31.75 x 6″

Choosing the LG 55UR340C9UD

The LG 55UR340C9UD suits offices, hospitality spaces, reception areas, and other business settings that need a 55-inch screen for both scheduled messaging and conventional television viewing. Its 4K panel, HDR10 support, built-in tuner, and two 10 W speakers make it a practical alternative to signage-only panels when staff also need straightforward live-TV and audio capability.

Within LG’s UR340C commercial family, this model emphasizes manageable deployment. USB cloning can copy settings between displays, while SuperSign Control supports centralized power, volume, scheduling, and firmware tasks. Crestron Connected compatibility, Ethernet, RS-232C, and IR control also make the screen better suited to managed AV environments than a basic consumer television.

Placement and setup considerations

• Plan for landscape installation and a 300 x 300 mm wall-mount pattern.
• Allow for the 48.6 x 28.1 x 2.3-inch chassis and 30.9 lb weight when selecting a mount.
• Choose among three HDMI inputs, RF antenna input, optical audio output, Ethernet, and RS-232C before routing cables.
• Match the stated 16-hours-per-day duty cycle to the intended schedule.

For buyers searching by the exact model number 55UR340C9UD, the key decision is whether its 55-inch size, 400 cd/m² brightness, commercial controls, and built-in TV features fit the room and operating plan.