Sharp LM431 43" 4K Infrared Touch Display
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
Documents
Delivery & returns
Estimated delivery 25 Aug - 29 Aug. 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.
Payment & security
Pay securely by card, or apply for a 30-day purchase order account.
Schools, colleges, universities, NHS, government bodies and charities can order on invoice — no card payment required.
All transactions are processed over an encrypted, secure checkout.
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