55SM5KD

What the LG 55SM5KD is designed to do

The LG 55SM5KD is a 55-inch standard signage display from the SM5K series, with a 1,920 x 1,080 full HD panel and 450 nits typical brightness. LG has discontinued this model, so this page is written for organisations that already operate it, buyers comparing it with newer signage, and anyone who needs a replacement that fills the same role.

In practice, a screen of this size shows menus, wayfinding, announcements and promotional loops in a corridor, reception or lobby. Its portrait and landscape support and built-in content tools mean facilities and marketing teams can update screens without a separate PC for every change.

Content playback and management

A quad-core system-on-chip runs the webOS platform, so content plays directly on the display. The embedded content management system lets you build playlists and edit content on the screen itself, and SuperSign Premium is the listed content management software for larger deployments. Videos, images and HTML pages transition without black gaps, which keeps loops smooth.

• Live streaming: RTSP, RTP, HLS and UDP multicast streams are supported.
• Split screens: picture-by-picture and picture-in-picture modes divide the panel into up to two zones.
• Control: SuperSign Link is the listed software for control and monitoring.

Connections, layout and mounting

Inputs include two HDMI ports, DisplayPort, DVI-D, RGB, USB 3.0 and audio, while DisplayPort and audio outputs are provided. For control, the display offers RS232C in and out, an RJ input, an IR receiver and a pixel sensor. The logo is detachable so the screen can be installed in either orientation, and built-in speakers can carry short announcements. The head uses a 300 x 300 VESA pattern, weighs 17.5 kg and measures 1,238 x 714.9 x 54 mm. Bezels are 11.9 mm on three sides and 18 mm at the bottom.

Where it fits in Qatar

• A clinic reception in Al Sadd showing queue numbers, opening notices and health information in an air-conditioned waiting area.
• A serviced apartment lobby in Lusail displaying check-in details and a local guide, set to portrait mode in a narrow foyer.
• A government office in Doha running service information and visitor instructions, with the display monitored from a management desk.

What to plan before you order

The operating range is 0°C to 40°C with 10% to 80% humidity. Summer temperatures in Qatar rise above 45°C, so the display should sit inside air-conditioned space with clear airflow around the housing, not in unconditioned walkways or outdoor kiosks. The conformal coating on the main circuit board protects against dust and humidity, but it does not change the temperature limit.

The power supply is built in and accepts 100-240 V~ at 50/60 Hz. Typical consumption is 100 W, falling to 70 W in smart energy saving mode. The model carries UL, cUL, CB, TUV and KC safety marks, FCC Class A, CE and KCC EMC marks, and Energy Star 7.0. Optional accessories include the ST-492T stand, LSW350B wall bracket, AM-B330S VESA adapter, KT-OPSA OPS kit, MP500 and MP700 media players, an HDBaseT option (EB-B100) and a KT-T550 touch overlay.

SmartRooms Qatar offers a free site survey before wall mounting, which is worth booking for a 17.5 kg head on a feature wall. Because this model is discontinued, request a quote and our team will recommend a current equivalent with matching inputs, mounting and power requirements. Quotations are usually issued within one working day, and we accept LPOs for government and private buyers alike.