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PN-LM431

Sharp PN-LM431 43-inch 4K Infrared Touch Display

Screen size
43 / 108
Resolution
3840 x 2160
Touch
Infrared
System
App side loading (Google CTS…
WhatsApp
Priceon request
QuotationWithin 1 working day
DeliveryConfirmed with your quote, based on stock
PDFDownload datasheet (PN-LM431_Datasheet.pdf)
Overview

The Sharp PN-LM431 is a 43-inch 4K interactive display with 20-point infrared touch and a built-in Android 14 system, so it runs meetings and signage without a connected PC. It offers 500 cd/m² brightness and a 15 mm bezel. One USB-C cable can carry video, touch and up to 65 W to a laptop. It suits meeting rooms and classrooms in Qatar. Request a quote from SmartRooms Qatar.

What the Sharp PN-LM431 is built to do

The Sharp PN-LM431 is a 43-inch class interactive display for small meeting rooms, huddle spaces and touch-enabled signage. Its built-in System on Chip runs Android 14, so the whiteboard, PDF and Office viewer, file manager and web browser are available directly on the screen. There is no separate computer to buy, hide or manage, which suits teams that want a room ready the moment people walk in.

Panel and touch facts that matter in a bright room

The VA panel offers 3,840 x 2,160 pixels with 500 cd/m² brightness and a typical contrast ratio of 4000:1. Its thermally tempered cover glass is 3.1 mm thick, rated 9H, and uses zero bonding with an anti-glare coating, which reduces reflections when daylight or ceiling lights fall across the screen. The infrared touch layer registers up to 20 touches with an accuracy of ±1 mm and works with fingers, gloves and the two passive styluses included in the box.

Two details deserve attention before purchase. The source data lists no palm rejection, so presenters should be briefed to lift their hand while writing. Windows Ink is supported, and touch works on Android, Linux, Raspberry Pi and Windows, while Mac OS is limited to single touch.

Connections for laptops, cameras and signage

  • USB-C 1 accepts video, touch signal and audio input, with DP alt mode 1.4 and up to 65 W of power for a notebook, so one cable can handle bring-your-own-device meetings.
  • Three HDMI inputs support UHD at 60 Hz with HDCP 2.3, and HDMI IN 3 adds ARC for sound from a connected device.
  • Three USB 3.0 ports take peripherals or USB storage and switch automatically between the Android SoC, an OPS module and a PC.
  • Wireless sharing through EShare works without apps or dongles, with IEEE 802.11 a/b/g/n/ac/ax support, WPA3 Enterprise and Bluetooth 5.3.
  • LAN at 100 Mbit/s, RS-232C at 9600 bps and a 3.5 mm remote-in port for the optional Eco Sensor.

Where it fits in Qatar

In an office in West Bay or Msheireb, a 43-inch panel suits a huddle room where four to eight people share one screen and a digital whiteboard. A private school in Al Wakrah or Education City can use the touch layer and annotation overlay in a classroom, with up to 20 simultaneous touch points for group activities. A clinic or hotel lobby in Al Sadd or near Hamad International Airport can use portrait orientation and application lock for wayfinding and information, with the side bars hidden.

Heat, power and installation conditions

The operating range is +5 to +35 °C with 20 to 80 percent humidity, so this panel belongs in indoor, air-conditioned rooms. Outdoor summer temperatures in Qatar regularly pass 45 °C, so keep the screen away from direct sun through windows and confirm the location with the SmartRooms Qatar team before fixing it. The power supply accepts 100-240 V AC at 50/60 Hz, which covers Qatar's 240 V, 50 Hz mains, with typical consumption of 110 W and below 0.5 W in ECO standby.

Planning the mount and the order

The panel weighs 21 kg and measures 994 x 582 x 73 mm, with a 400 x 400 mm VESA pattern using M6 fixings. Optional accessories include the PDW S 32-65 L and P wall mount, the PD04 Tipster trolley, feet (ST-43M) and a soundbar (PN-ZCMS1). Before wall-mounting a panel of this weight, SmartRooms Qatar offers a free site survey to check wall structure and cable routes. The warranty is three years including the backlight, with an optional fourth and fifth year extension. For several rooms, one quotation can cover every unit, and orders can follow a purchase order (LPO) or government tender, with payment by bank transfer, cheque or purchase order.

Request a quote from SmartRooms Qatar for the PN-LM431 with the accessories and mounting plan you need.

Highlights

  • 43-inch class 4K UHD panel with 3,840 x 2,160 pixels
  • Up to 20-point infrared multi-touch on zero bonding glass
  • Built-in Android 14 system, no external PC required
  • 500 cd/m² brightness with anti-glare coating
  • USB-C 1 delivers video, touch and up to 65 W
  • 3-year warranty including the backlight

Classroom fit

At 43″ the farthest student should sit within about 3.2 m (6× the screen height).

Estimated timeline

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

Specifications

84 specifications · Source: manufacturer · checked Oct 2026
Display11
Panel Technology
VA with Direct LED backlights
Screen Size [inch/cm]
43 / 108
Aspect Ratio
16:9
Brightness (without glass) [cd/m²]
500
Contrast Ratio (typ.)
4000:1
Viewing Angle [°]
178 horizontal / 178 vertical (typ. at contrast ratio 10:1)
Colour Depth [bn]
1.07 (8bit + FRC)
Response Time (typ.) [ms]
8 (grey-to-grey)
Panel Refresh Rate [Hz]
60
Haze Level [%]
Pro (25)
Supported Orientation
45° Tilted Backwards; Landscape; Portrait
Touch8
Touch Technology
Infrared
Number of Touches
Real multi-touch up to 20 touches
Touch Method
Finger; Gloves; Stylus dual pen tip (2.6mm/6.8mm)
Supported Operating System
Android; Linux; Mac OS (single touch); Raspberry Pi; Windows
Data Interface
USB 2.0 (full speed) HID; USB powered, plug & play
Accuracy [mm]
+/- 1
Windows Ink
Yes
Palm Rejection
No
Protective Glass4
Type
Thermal-tempered, anti-glare coating; Zero Bonding
Bonding Gap [mm]
0.85
Thickness [mm]
3.1
Hardness [H]
9
Resolution2
Native Resolution
3840 x 2160
Supported Resolutions
1024 x 768;; 1280 x 1024;; 1280 x 720;; 1280 x 960;; 1440 x 900;; 1680 x 1050;; 1920 x 1080;; 3840 x 2160;; 4096 x 2160;; 640 x 480;; 720 x 400;; 800 x 600
Synchronisation Rate2
Horizontal Frequency [kHz]
31.5 - 135
Vertical Frequency [Hz]
24 - 70
Connectivity16
HDMI IN 1
Video Input; UHD (60 Hz) HDCP (2.3); Audio Input; CEC
HDMI IN 2
Video Input; UHD (60 Hz) HDCP (2.3); Audio Input; CEC
HDMI IN 3
ARC; Video Input; UHD (60 Hz) HDCP (2.3); Audio Input; CEC
HDMI OUT
Internal SoC content: FHD (60 Hz) HDCP (2.3); UHD (60 Hz); Video Output; Audio Output; Loop Through: HDMI IN 1/2/3, OPS, USB-C, Android SoC
USB-A 1
USB (3.0); Peripherals; USB Storage; Auto Switch (Android SoC, OPS, PC)
USB-A 2
USB (3.0); Peripherals; USB Storage; Auto Switch (Android SoC, OPS, PC)
USB-A 3
USB (3.0); Peripherals; USB Storage; Auto Switch (Android SoC, OPS, PC)
USB-A (Service)
Wireless Adapter; USB 2.0; Service
USB-C 1
Touch Signal; Video Input; UHD (60 Hz); DP alt. 1.4; HDCP (2.3); Audio Input; USB 2.0 / 3.0; 65 W
USB-C 2
USB 3.0; 7.5 W; Peripherals; Auto Switch (Android SoC, OPS, PC)
USB-B 1
Touch Signal; USB (3.0)
Audio Output (3.5 mm)
Audio Output; Line Out
LAN 1
100 MBit/s
RS-232C
9600 bps
Remote In (3.5 mm)
Eco Sensor (IR-Extender, Ambient and Presence)
Input Detect
First
Sensors2
Ambient Light Sensor
optional via Eco Sensor (KTES1)
Human Sensor
optional via Eco Sensor (KTES1)
Electrical4
Power Consumption [W]
110 (typ.)
Power Savings Mode [W]
< 0.5 (ECO Standby); < 2 (Networked Standby)
Power Management
VESA DPMS
Power Supply
100-240 V AC; 50/60 Hz
Environmental Conditions4
Operating Temperature [°C]
+5 to +35
Operating Humidity [%]
20 to 80
Storage Humidity [%]
10 to 80
Storage Temperature [°C]
-20 to 60
Mechanical7
Dimensions (W x H x D) [mm]
994 x 582 x 73
Weight [kg]
21
Bezel Width [mm]
15 (symmetrical)
VESA Mounting [mm]
400 x 400 (FDMI); M6
Packaging Dimensions (W x H x D) [mm]
1,140 x 740 x 185
Packaging Weight [kg]
29
Material
Aluminum alloy (front side); metal (back side)
Embedded Computing7
System Version
Android 14
CPU
Arm Cortex A53x4 2 GHz (octo-core); Arm Cortex A73x4 2.3 GHz
System Memory
4G RAM
Internal Storage
32GB ROM
Android Features
App side loading (Google CTS compliant); Application lock; Hide Android SoC; Hide side bar; Portrait support (apps and OSD)
Built-in Applications
File Manager; Input Select; Office and PDF Viewer - MobiOffice; Setting; Web Browser; Whiteboard; Wireless Screen Sharing - E-Share
Built-in Tools
Annotation overlay mode
Bluetooth1
Bluetooth
5.3 compliant: A2DP; AVRCP; GATT; HID
Wireless Lan1
WLAN
IEEE802.11 a/b/g/n/ac/ax compliant; WPA/WPA2/WPA3 Enterprise, Access Point
Available Options1
Accessories
Eco Sensor (KTES1); Feet (ST-43M); Soundbar (PN-ZCMS1); Trolley (PD04 Tipster); USB-C cable (USB-C 5M; USB-C 7M); Wall mount (PDW S 32-65 L & P)
Regulatory2
Safety and Ergonomics
CE; EMC Class B; RoHS; UKCA
Pixel Failure Class
ISO 9241-307, Class 1
Green Features2
Energy Efficiency
ECOMode; LED Backlight
Ecological Standards
EnergyStar 8.0
3Rd Party Certifications2
Barco ClickShare
Tested compatible for Barco ClickShare (Conference)
Q-Sys
Q-Sys Plug-in
Additional Features8
Special Characteristics
CEC Support; HDMI ARC; NaViSet Administrator 2 - free download; OSD rotation for portrait mode; Powered USB Port (65 W); Scheduler
Audio
Integrated Speakers (2 x 10 W)
Shipping Content
1x 300 cm USB Cable; 2 x Passive Stylus; 2x AAA batteries; Blank Sticker; Bracket for Camera; Cable Clamps; Display; Power Cable; Remote Control; Setup Manual; Wireless Adapter
Warranty
3 years warranty incl. backlight; optional 4. + 5. year warranty extension 1
Operating Hours
18/7
External Control
HDMI CEC; Scheduled Timer
Remote Management
NaViSet Administrator 2
Security
Disable HW Buttons; Disable IR Functionality; Disable USB and LAN Ports; IEEE802.1X (LAN & Wi-Fi)

Downloads

19 files from the manufacturer
PDF Datasheets PN-LM431_Datasheet.pdf 469 KB Sharp PN-LM431 datasheets (PDF, 469 KB) PDF Manuals & guides EShare_Wireless_Casting_UserGuide_1_5.pdf 2.7 MB Sharp PN-LM431 manuals & guides (PDF, 2.7 MB) PDF Manuals & guides OperationGuidelines-LargeFormat.pdf 455 KB Sharp PN-LM431 manuals & guides (PDF, 455 KB) PDF Manuals & guides PN-LM551-LM431_N-Format_command_manual_English_Rev1.pdf 1.0 MB Sharp PN-LM431 manuals & guides (PDF, 1.0 MB) PDF Manuals & guides PN-LM551-LM431_S-Format_command_manual_English_Rev1.pdf 212 KB Sharp PN-LM431 manuals & guides (PDF, 212 KB) PDF Manuals & guides PN-LM551-LM431_Secure_command_manual_en_Rev2.pdf 173 KB Sharp PN-LM431 manuals & guides (PDF, 173 KB) PDF Manuals & guides Sharp_LM551-LM431_manual_English_ver2_20251119.pdf 7.8 MB Sharp PN-LM431 manuals & guides (PDF, 7.8 MB) PDF Manuals & guides Sharp_LM551-LM431_setup_English_ver1_20250228a.pdf 5.6 MB Sharp PN-LM431 manuals & guides (PDF, 5.6 MB) PDF Manuals & guides Web-browser_manual_English_v3-11.pdf 344 KB Sharp PN-LM431 manuals & guides (PDF, 344 KB) PDF Brochures Sharp PN-LM Series Brochure v1.0.pdf 1.5 MB Sharp PN-LM431 brochures (PDF, 1.5 MB) PDF Brochures Sharp-NEC-LM_Series.pdf 2.3 MB Sharp PN-LM431 brochures (PDF, 2.3 MB) PDF Brochures SharpProduct_Overview.pdf 38.2 MB Sharp PN-LM431 brochures (PDF, 38.2 MB) PDF Brochures Warranty-and-Services_Interactive_Computing.pdf 1.0 MB Sharp PN-LM431 brochures (PDF, 1.0 MB) PDF Drawings & CAD Drawing_LM431_ver1.0.pdf 135 KB Sharp PN-LM431 drawings & cad (PDF, 135 KB) DWG Drawings & CAD · Opens on manufacturer site Drawing_LM431_ver1.0.dwg Sharp PN-LM431 drawings & cad (DWG) DXF Drawings & CAD · Opens on manufacturer site Drawing_LM431_ver1.0.dxf Sharp PN-LM431 drawings & cad (DXF) RFA Drawings & CAD · Opens on manufacturer site Drawing_LM431_ver1.0.rfa Sharp PN-LM431 drawings & cad (RFA) PDF Certificates & compliance 1741889691__UKCA-DoC--2025-03-1239-PN-LM431,.pdf 443 KB Sharp PN-LM431 certificates & compliance (PDF, 443 KB) PDF Certificates & compliance CE-DoC-2025-02-1228-PN-LM431.pdf 283 KB Sharp PN-LM431 certificates & compliance (PDF, 283 KB)

Questions about PN-LM431

What is the Sharp PN-LM431 best suited for?
It suits small meeting rooms, huddle spaces and touch-enabled signage where one 43-inch screen should carry the meeting without a separate computer. Its built-in Android 14 system includes a whiteboard, annotation overlay, an office and PDF viewer and a web browser, so presenters can start writing or showing files straight away. It is a practical choice for teams that meet in compact rooms.
Do I need a PC to run this display?
No. The integrated controller and Android 14 System-on-Chip run the display on its own, with pre-installed applications, a home screen launcher and EShare for wireless sharing. A PC can still be connected through USB-C or HDMI when needed, and Windows Ink is supported for pen writing when a Windows machine is used. This suits rooms where IT wants fewer devices to maintain.
How many people can write on the screen at the same time?
The infrared touch layer supports up to 20 simultaneous touch points with an accuracy of ±1 mm. It works with fingers, gloves and the two passive styluses included in the box. The source data does not list palm rejection, so presenters should be briefed to lift their hand while writing to avoid stray marks during group sessions.
Is it suitable for a classroom in Education City or Al Wakrah?
Yes, for interactive lessons with small groups. The 20-point touch layer, annotation overlay and whiteboard support group activities, and the 4K panel shows fine text and diagrams clearly from the back of a room. Schools should plan the mounting height for pupils and confirm language needs, because the data does not list interface language packs. Ask SmartRooms Qatar before ordering.
Can it be installed near a window or in a sunlit lobby in Doha?
The operating range is +5 to +35 °C with 20 to 80 percent humidity, so it is designed for indoor, air-conditioned rooms. Doha summer heat above 45 °C and dust storms make unconditioned spaces unsuitable. The 500 cd/m² brightness and anti-glare coating help with daylight, but direct sun through windows should still be avoided. Confirm the exact location with the SmartRooms Qatar team before fixing.
Will the power supply work with Qatar mains electricity?
The power supply is rated 100-240 V AC at 50/60 Hz, which covers Qatar's 240 V, 50 Hz mains. Typical consumption is 110 W, and the ECO standby mode draws below 0.5 W. The power cable is included in the shipping contents. For a multi-room installation, your facilities team can check outlet positions against the panel's location before delivery is scheduled.
How do staff share content from a laptop or phone?
Any personal device can share wirelessly through the built-in EShare app without installing apps or using dongles. For a laptop, a single USB-C 1 cable carries video, touch signal and up to 65 W of power, which suits bring-your-own-device workflows. The package includes a wireless adapter and a 300 cm USB cable. Wireless support covers IEEE 802.11 a/b/g/n/ac/ax with WPA3 Enterprise.
Can it be wall-mounted in a West Bay meeting room?
Yes. The panel has a 400 x 400 mm VESA pattern with M6 fixings and measures 994 x 582 x 73 mm at 21 kg. The optional PDW S 32-65 L and P wall mount is listed for the 32 to 65 inch range. SmartRooms Qatar offers a free site survey before fixing a panel of this weight, to check wall structure, fixings and cable routing in the room.
Is it suitable for information screens in a clinic or hotel lobby in Al Sadd?
It can run information and wayfinding content. Portrait orientation, hidden side bars, application lock, a built-in web browser and a scheduler help keep the screen dedicated to its purpose. Administrators can also disable hardware buttons, IR functionality, USB and LAN ports, and use IEEE 802.1X on LAN and Wi-Fi. Confirm the lobby environment, since the operating range is +5 to +35 °C.
Is it compatible with Barco ClickShare or Q-Sys systems?
The manufacturer lists it as tested compatible with Barco ClickShare for conferencing, and it offers a Q-Sys plug-in. Compatibility should still be confirmed against the exact ClickShare and Q-Sys versions in your room when you request a quote. This is useful for organisations that combine wireless presentation with a managed conferencing system in boardrooms or lecture spaces.
What warranty applies to this model?
The manufacturer provides a 3-year warranty that includes the backlight, with an optional fourth and fifth year extension. SmartRooms Qatar supplies the product under the manufacturer warranty. Ask for the extension to be included in your quotation if you want longer cover for a school, clinic or government office, so the costs and terms are clear before you place an order.
Can a school or government body buy several units through an LPO?
Yes. Multiple units can be quoted together and ordered through a purchase order (LPO) or a government tender, including Monaqasat. Payment can be made by bank transfer, cheque or purchase order. Quotations are usually issued within one working day, and lead times are confirmed with each quotation based on stock. Include the room list and mounting method in your request for accurate pricing.

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