Sharp LM431 43" 4K Infrared Touch Display
- In UK stock, ships from the UK
- UK manufacturer warranty
- UK-based engineers
- No import duty or customs charges
- GBP pricing, UK VAT invoices
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Description
The Sharp LM431 is a 43" member of Sharp's LM Series of interactive displays, built for small meeting spaces, huddle rooms and interactive signage. A VA panel with Direct LED backlighting delivers native 3840 x 2160 4K UHD resolution at 500 cd/m2 brightness and a 4000:1 contrast ratio, giving crisp, legible content even in bright rooms. Infrared touch technology provides real 20-point multi-touch with +/-1mm accuracy, recognising finger, gloved and dual-tip stylus input for a natural pen-on-paper writing experience. An integrated Android 14 CTS-compliant System on Chip with octo-core ARM processor, 4GB RAM and 32GB storage runs a built-in whiteboard, overlay annotation mode and wireless screen sharing without any external PC. Connectivity includes three HDMI inputs (one with ARC), an HDMI output, two USB-C ports (one delivering 65W power), three USB-A 3.0 ports, USB-B, LAN and RS-232C control, making the LM431 simple to install and operate in everyday collaboration spaces.
Key features
Real multi-touch with up to 20 simultaneous touch points and +/-1mm accuracy, supporting finger, glove and dual-tip stylus input for natural writing and drawing.
Built-in octo-core SoC with 4GB RAM and 32GB storage runs whiteboard, annotation overlay and wireless sharing apps with no external computer needed.
3840 x 2160 native resolution at 500 cd/m2 brightness and 4000:1 contrast ratio for sharp, bright content in typical meeting rooms.
65W USB-C power delivery plus video and data lets a laptop connect and charge over one cable for fast, tidy meeting room setups.
Backed by Sharp's 3-year warranty including the backlight, with optional extensions available.
Technical specifications
See the 43" on your wall, to scale
On a phone, point your camera at the wall and see the 43" there at its real size. On a computer, upload a photo of the wall — or scan the QR code to take one with your phone and it will appear here — and drag the display around it to scale.
Delivery & returns
Estimated delivery 29 Aug - 2 Sept. UK mainland delivery only — some large or made-to-order items may carry longer lead times.
Unused items in original packaging can be returned within 14 days of delivery. Faulty items are covered under manufacturer warranty.
Bought in the UK, backed in the UK
This item is in UK stock and ships to you from within the UK, so the order never crosses a customs border on its way to you.
The manufacturer warranty is honoured here in the UK. If something fails, you deal with us — not with an overseas seller in another time zone.
Our own UK-based engineers install, commission and support what we sell, and can attend site when a system needs hands on it.
Delivered within the UK mainland, so there is no import duty, customs charge or courier handling fee waiting for you on delivery.
Prices are in pounds sterling with proper UK VAT invoices, and purchase orders are accepted from approved education accounts — no currency conversion and no surprises at the door.
Payment & security
Pay securely by card. Education customers can apply for a 30-day purchase order account.
Schools, colleges, sixth forms, universities and multi-academy trusts can order on invoice — no card payment required. Purchase orders and credit terms are for education customers only.
All transactions are processed over an encrypted, secure checkout.
Need help specifying this for your space?
Ask Andrew — he knows the full catalogue and can advise on installation, mounting and compatible AV systems.