ViewSonic
ViewSonic IFP5541-1-1C 55" ViewBoard 4K Interactive Display, 450 cd/m²
Similar size55"
4K UHD450 cd/m²55"
£1,763.23inc. VAT
In stock
UK stockSharp
Sharp LM551 55" 4K Infrared Touch Display
£1,651.32inc. VAT
£1,376.10 ex. VAT
In stock, dispatched within 2 working days
1
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Bought in the UK, backed in the UKWhy it matters →
- In UK stock, ships from the UK
- UK manufacturer warranty
- UK-based engineers
- No import duty or customs charges
- GBP pricing, UK VAT invoices
Key specifications
Screen Size55 in
Resolution3840 x 2160
Resolution Standard4K UHD
Aspect Ratio16:9
Panel TypeVA with Direct LED backlight
Brightness500 cd/m2
Contrast Ratio5000:1
Touch TechnologyInfrared
Description
The Sharp LM551 is a 55" interactive display from Sharp's LM Series, aimed at small meeting spaces and interactive signage where responsive, professional-grade touch collaboration is needed. Its VA panel with Direct LED backlighting produces native 3840 x 2160 4K UHD resolution at 500 cd/m2 brightness and a 5000:1 contrast ratio.
Infrared touch technology supports real 20-point multi-touch with +/-1mm accuracy and recognises finger, gloved and dual-tip stylus input, giving a natural pen-on-paper writing feel. An integrated Android 14 CTS-compliant SoC (quad Cortex-A53 plus quad Cortex-A73, 4GB RAM, 32GB storage) runs a built-in whiteboard, annotation overlay and wireless screen sharing directly from the display.
The LM551 connects via three HDMI inputs (ARC on HDMI 3), an HDMI output, two USB-C ports (one with 65W power delivery and DisplayPort Alt Mode 1.4), three USB-A 3.0 ports, USB-B, LAN and RS-232C, and is rated for 18/7 operation.
Key features
20-point infrared touch
Real multi-touch with up to 20 simultaneous touch points and +/-1mm accuracy for finger, glove and stylus input.
Integrated Android 14 PC
Octo-core SoC with 4GB RAM and 32GB storage drives whiteboard, annotation and wireless sharing apps without an external computer.
4K UHD at 500 cd/m2
3840 x 2160 resolution with 5000:1 contrast ratio keeps content sharp and legible in typical office lighting.
65W USB-C single-cable connection
One USB-C cable carries video, data and 65W laptop charging for a fast, tidy room setup.
18/7 duty cycle, 3-year warranty
Rated for extended daily use and covered by Sharp's 3-year warranty including the backlight.
Technical specifications
Screen Size55 in
Resolution3840 x 2160
Resolution Standard4K UHD
Aspect Ratio16:9
Panel TypeVA with Direct LED backlight
Brightness500 cd/m2
Contrast Ratio5000:1
Touch TechnologyInfrared
Touch Points20
Touch Accuracy+/-1 mm
Touch Input MethodsFinger, glove, dual-tip stylus
Operating SystemAndroid 14 (CTS-compliant)
ProcessorARM Cortex-A53x4 2GHz + Cortex-A73x4 2.3GHz (octo-core)
Memory (RAM)4 GB
Storage32 GB
HDMI Inputs3 (ARC on HDMI 3)
HDMI Outputs1
USB-C Ports2 (1 with 65W PD + DP Alt 1.4)
USB-A Ports3 (USB 3.0)
USB-B Ports1
NetworkLAN (100Mbps), RS-232C
Audio Output3.5mm jack
Power Consumption (Operating)145 W
Power Consumption (Standby)<0.5 W
Dimensions (W x H x D, without stand)1265 x 736 x 73 mm
Weight33 kg
VESA Mount400 x 400 (M6)
Operating Hours Rating18/7
Warranty3 years incl. backlight
Size Band50 - 64"
See the 55" on your wall, to scale
On a phone, point your camera at the wall and see the 55" 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.
Complete your setup
Optional extras that fit this product. Tick anything you need and it joins the same basket — or add this product on its own from the buy box above.
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Your Configuration
Sharp LM551 55" 4K Infrared Touch Display × 1£1,651.32
Total£1,651.32
inc. VAT
1
Documents
Delivery & returns
Estimated delivery 5 Sept - 9 Sept. UK mainland delivery only. Some large or made-to-order items carry longer lead times, shown on the product page.
Unused items in original packaging can be returned within 14 days of delivery — see the returns policy for how business and consumer returns differ. Faulty items are covered under manufacturer warranty and by your statutory rights.
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, with no card payment required. Purchase orders and credit terms are for education customers only.
All transactions are processed over an encrypted, secure checkout.
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Ask Andrew. He knows the full catalogue and can advise on installation, mounting and compatible AV systems.