LG KT-T650 (Discontinued) · Replacements in Qatar

Name: LG KT-T650 65-inch Infrared Touch Overlay Kit
Brand: LG
SKU: lg-kt-t650
Availability: Discontinued

Overview

The LG KT-T650 is a discontinued 65-inch infrared touch overlay that adds up to 10-point touch to the compatible LG 65LS33A display. It offers 1mm accuracy, a 1,428 x 803 touch resolution and USB 2.0 connectivity, and supports Windows 7 and 8, Mac OS X, Android and Linux. Qatar schools, offices and training rooms that already run this display, or are comparing options, should request a quote for a current equivalent.

An infrared touch layer for a 65-inch LG display

The LG KT-T650 is an overlay touch kit rather than a display. It sits in front of a compatible 65-inch panel and detects touch with infrared, so the screen itself does not need built-in touch hardware. The source data lists the LG 65LS33A as the compatible panel, and the model is discontinued, which matters for anyone planning a purchase today.

Touch performance: the figures that matter in a room

The overlay tracks up to 10 touch points at once, so two or more people can annotate, drag objects or work together on the same board. Accuracy is rated at 1mm, the touch resolution is 1,428 x 803, and scan time runs from 13 to 30ms. It responds to objects as small as 8mm in diameter. The protective glass is 2.8T with an anti-glare finish, which helps reduce reflections from windows and ceiling lights.

USB 2.0 connection, drawing a typical 2.5W over USB
Landscape and portrait orientation supported
Manual, writing software CD, two pens and installation accessories included

Where it fits in Qatar

A private school in Al Wakrah fitting out classrooms with 65-inch panels can use the kit for interactive lessons, with teachers marking up content directly on the screen using the two pens and the bundled writing software. In a training room at Education City, the overlay helps trainers move between slides and handwritten notes within a single session. In a Doha office, the same kit can run in landscape for brainstorming or in portrait for reviewing documents.

Planning the installation and the operating environment

The overlay measures 1,485.5 x 859.5 x 23.5 mm, with a maximum depth of 62.1 mm, and the head weighs 18.5 kg. Plan wall or frame clearance and load capacity before ordering, and book a free site survey with SmartRooms Qatar. The rated operating range is 0°C to 40°C at 10% to 80% humidity. Summer temperatures in Qatar can exceed 45°C, so keep the display in an air-conditioned room away from direct sunlight and glass facades, and confirm your conditions with the SmartRooms Qatar team before approving a quotation.

Discontinued model: request a quote for a current equivalent

LG has discontinued the KT-T650. If your organisation already owns one, or you are comparing it with a newer overlay, send us your display model and a sketch or photo of the room. SmartRooms Qatar supplies and delivers to all eight municipalities of Qatar, installs professionally, and accepts purchase orders (LPOs) and government tenders, including Monaqasat. Request a quote today and our team will usually reply within one working day.

Highlights

65-inch overlay built for the compatible LG 65LS33A
Infrared touch with up to 10 simultaneous touch points
1mm accuracy and 1,428 x 803 touch resolution
USB 2.0 connection with 2.5W typical power draw
Supports landscape and portrait orientation
Rated 0°C to 40°C operation, 10% to 80% humidity
Discontinued by LG: request a quote for a current equivalent

Estimated timeline

Quotation within 1 working day · delivery timing depends on stock availability, and we confirm it with your quotation.

Specifications

22 specifications · Source: manufacturer · checked Oct 2026

TOUCH9

Touch type: IR(Infrared Rays) Spread
Available object size for touch: Ø 8mm
Scan Time: 13 ~ 30ms
Accuracy: 1mm
Interface: USB 2.0
Protection Glass Thickness: 2.8T (Anti-Glare)
Operating Systme Support: Windows 7, Windows 8 / Mac OS X (10.7 or later) / Android / Linux (Kernel 3.9 or later)
Multi touch point: Max 10 Point
Touch Resolution: 1,428 x 803

PANEL3

Screen Size: 65"
Compatible Products: 65LS33A
Orientation: Landscape & Portrait

CONNECTIVITY1

Input: USB

PHYSICAL SPECIFICATION3

Bezel Width: 27.0mm
Overlay Dimension (W x H x D): 1,485.5 x 859.5 x 23.5 mm (Max 62.1 mm)
Weight (Head): 18.5kg

ENVIRONMENT CONDITIONS2

Operation Temperature: 0°C to 40°C
Operation Humidity: 10 % to 80 %

POWER2

Power Supply: USB
Typ.: 2.5W

SOFTWARE COMPATIBILITY1

IWB Software: Yes

ACCESSORY1

Basic: Manual (Overlay), CD (Writing S/W), Pen (2), Tray, Install Accessories

Downloads

1 file from the manufacturer

URL Software & firmware · Opens on manufacturer site Software & Drivers (support page)

Questions about KT-T650

What is the LG KT-T650?

It is a touch overlay kit, a frame-style layer that adds infrared touch to a compatible 65-inch LG display rather than being a screen itself. It tracks up to 10 touch points and is rated at 1mm accuracy. Schools, offices and training rooms use it to turn an existing panel into an interactive surface for teaching or meetings without replacing the display.

Is the LG KT-T650 still available from LG?

No. LG has discontinued the KT-T650. Organisations that already own one, or buyers comparing it with newer overlays, should request a quote for a current equivalent or a compatible replacement. SmartRooms Qatar will check your display model and room layout before recommending an option, and quotations usually come back within one working day.

Which display is the KT-T650 made for?

The source data lists the LG 65LS33A as the compatible product, and the overlay is a 65-inch model. Before ordering, confirm your panel's exact model number against the compatibility listing, because a touch overlay must match the panel it is fitted to. If your display is a different model, send its number with your quote request so the team can check the fit.

How accurate is the touch and how many points does it track?

The overlay has a 1mm accuracy rating and a touch resolution of 1,428 x 803. It tracks up to 10 touch points at once and responds to objects as small as 8mm in diameter, with scan times between 13 and 30ms. Two people can write or drag objects together during a lesson or meeting, using the two included pens and the bundled writing software.

Which operating systems does the KT-T650 support?

The manufacturer lists support for Windows 7, Windows 8, Mac OS X 10.7 or later, Android, and Linux with kernel 3.9 or later. The source data does not list Windows 10 or Windows 11, so confirm the operating system on your intended host computer before ordering, since the kit connects to that computer over USB.

How is it connected and what power does it draw?

The kit connects through USB 2.0 and draws its power over USB, with a typical consumption of 2.5W. The source data does not list a separate power supply, so the cable run from the display to the host computer is the main installation item to plan. Ask the SmartRooms Qatar team to confirm cable lengths against your room layout before approving a quotation.

Can it be used in portrait orientation?

Yes. The source data lists support for both landscape and portrait orientation. Portrait suits reviewing documents or working through a long list in a meeting room, while landscape suits standard presentations and group annotation. Confirm the mounting orientation of your display before ordering, because the panel must be set to the same orientation as the overlay.

Can the overlay run in a hot lobby or near a sunny window in Doha?

Not without controlling the environment. The KT-T650 is rated for 0°C to 40°C and 10% to 80% humidity, while Qatar summer temperatures can exceed 45°C. Keep it in an air-conditioned room away from direct sunlight and glass facades, and confirm the installation conditions with the SmartRooms Qatar team before approving a quotation.

How much space and depth do I need to plan for?

The overlay measures 1,485.5 x 859.5 x 23.5 mm, with a maximum depth of 62.1 mm, and the head weighs 18.5 kg. Measure your display's bezel and mounting depth before ordering, and check that the wall or frame can carry the weight. SmartRooms Qatar offers free site surveys, which are useful for a 65-inch installation in a lecture hall or boardroom in Lusail or West Bay.

A private school in Al Wakrah is fitting out classrooms. Is this kit a good fit?

It can be, where a classroom already has a compatible 65-inch LG 65LS33A display. The kit adds touch of up to 10 points, two pens and writing software, so teachers can annotate lessons directly on the screen. Because the model is discontinued, schools ordering several units should request one quotation covering all rooms and issue a purchase order (LPO), and the team will confirm current equivalents for rooms with different panels.

What comes in the box, and is it enough for a university training room in Education City?

The source data lists a manual for the overlay, a CD with writing software, two pens, a tray and installation accessories. For a training room where the trainer alternates between slides and handwritten notes, the pens and writing software cover basic annotation. Ask the SmartRooms Qatar team whether your room needs any additional cabling or mounting parts before ordering.

We already have a 65LS33A with this overlay. What if it fails?

Start by noting the overlay model and your display model. Because LG has discontinued the KT-T650, an identical replacement may not be available, so SmartRooms Qatar will quote the nearest compatible current option for your panel. Government ministries and authorities can attach a purchase order or tender reference to the request, and quotations usually come back within one working day.

Suggested replacements

Dahua LD-AI-W Dahua LD-AI-W USB Wi-Fi Dongle for Display Terminals

0 ℃ to +40 °C (+32 °F to +104 °F)

Dahua LDH22-SAI200L Dahua LDH22-SAI200L 21.5-inch Wall-mounted LCD Digital Signage

22″ 1920 (H) × 1080 (V) 250 cd/m² (typ.)

Dahua LDH32-SAI200L Dahua LDH32-SAI200L 32-inch Wall-mounted Digital Signage Display

32″ 1920 (H) × 1080 (V) 320 cd/m² (typ.)

Dahua LDH43-HAI400L Dahua LDH43-HAI400L 43-inch Wall-mounted LCD Digital Signage

43″ 3840 (H) × 2160 (V) 700 cd/m² (typ.)

Dahua LDH43-LAI400L Dahua LDH43-LAI400L 43-inch 4K Android LCD Digital Signage

43″ 3840 (H) × 2160 (V) 500 cd/m² (typ.)

Similar models

Dahua LDH43-SAI400L V1 Dahua LDH43-SAI400L V1 43-inch Wall-Mounted LCD Digital Signage

43″ 3840 (H) × 2160 (V) 500 cd/m² (typ.)

Dahua LDH43-SAI400L V2 Dahua LDH43-SAI400L V2 43-inch Indoor Wall-mounted Digital Signage

43″ 3840 (H) × 2160 (V) 500 cd/m² (typ.)

Dahua LDH43-SAI400TL Dahua LDH43-SAI400TL 43-inch Indoor Wall-mounted LCD Digital Signage

43″ 3840 (H) × 2160 (V) 500 cd/m² (typ.)

Dahua LDH50-LAI400L Dahua LDH50-LAI400L 50-inch LCD Digital Signage Display

50″ 3840 (H) × 2160 (V) 500 cd/m² (typ.)

Dahua LDH55-HAI400L Dahua LDH55-HAI400L 55-inch Indoor Wall-mounted LCD Digital Signage

55″ 3840 (H) × 2160 (V) 700 cd/m² (typ.)