ViewSonic
ViewSonic LS832WU WUXGA Projector
WUXGA5000 lm
£2,337.84inc. VAT
In stock
UK stockOptoma
Optoma ZK430ST 4K UHD Short Throw Laser Projector
£2,306.90inc. VAT
£1,922.42 ex. VAT
In stock, dispatched within 2 working days
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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
Display TechnologyDLP®
Native ResolutionUHD (3840x2160)
Brightness (Lumens)3,700 lumens
Contrast Ratio (Dynamic)300,000:1
Native Aspect Ratio16:9
Light SourceLaser
Light Source Life30,000 hours
Throw Ratio0.496:1
Description
The ZK430ST brings native 4K UHD resolution to Optoma's compact short throw laser projector line, using a 0.496:1 fixed lens to produce a large, detailed image from close to the screen. At 3,700 lumens it's aimed at classrooms and meeting rooms rather than large auditoria, prioritising sharpness and colour over sheer brightness.
The DuraCore laser light source is rated for up to 30,000 hours behind a sealed IP6X-rated optical engine, so the projector needs no lamp replacements and keeps performing reliably through years of daily use. Laser illumination also gives instant on/off, useful for rooms booked back-to-back through the school or working day.
With a 300,000:1 contrast ratio, a built-in 15W speaker and a compact eco-friendly chassis, the ZK430ST offers a straightforward route to 4K UHD short throw projection for education and small business spaces that don't need the extra brightness of the larger ZK series models.
Key features
Native 4K UHD resolution
3840x2160 detail from a compact short throw laser projector.
0.496:1 short throw lens
Fills a large screen from close range, ideal for compact classrooms and meeting rooms.
30,000-hour DuraCore laser engine
Maintenance-free light source removes the need for lamp changes.
IP6X dust-resistant design
Sealed optical engine supports long-term reliability.
Technical specifications
Choose a section to view its specifications.
Display (6)
- Display Technology
- DLP®
- Native Resolution
- UHD (3840x2160)
- Brightness (Lumens)
- 3,700 lumens
- Contrast Ratio (Dynamic)
- 300,000:1
- Native Aspect Ratio
- 16:9
- Supported Screen Size
- 0.91m ~ 7.62m (36" ~ 300") diagonal
Connectivity (2)
- 3D Support
- Full 3D
- Connections
- Inputs: 2 x HDMI 2.0 | Outputs: 1 x Audio 3.5mm, 1 x USB-A power 1.5A | Control: 1 x RS232, 1 x RJ45
Audio (2)
- Speaker Count
- 1
- Speaker Power
- 15W
Certifications & Warranty (1)
- IP Rating
- IP6X
General (13)
- Light Source
- Laser
- Light Source Life
- 30,000 hours
- Throw Ratio
- 0.496:1
- Projection Distance
- 0.4m - 3.3m
- Zoom Type
- Fixed
- Keystone Correction (Horizontal)
- +/-15°
- Keystone Correction (Vertical)
- +/-15°
- Noise Level (Min)
- 28dB
- Noise Level (Max)
- 35dB
- Security Features
- Security bar, Kensington Lock, Password protected interface
- 24/7 Operation
- Yes
- 360 Degree Operation
- Yes
- Power Supply
- External power supply, 100V ~ 240V, 50-60Hz
Throw distance guide
With its 0.496:1 throw ratio, here's how far the projector needs to sit from the screen for common 16:9 image sizes. Try our throw distance calculator for your exact room.
Lens distance: 0.4 to 3.3 m
Try a size
100"
16:9 diagonal image
Image
2.21 m × 1.25 m
Lens position
1.1 m
Side view: drag the projector to try its available lens positions
Position fits
Manufacturer lens-distance limit: 0.4 m to 3.3 m. The dotted lines show the usable zoom positions for this picture size.
| Image size | Image dimensions | Lens distance |
|---|---|---|
| 60" | 1.33 m × 0.75 m | 0.7 m |
| 80" | 1.77 m × 1.00 m | 0.9 m |
| 100" | 2.21 m × 1.25 m | 1.1 m |
| 120" | 2.66 m × 1.49 m | 1.3 m |
| 150" | 3.32 m × 1.87 m | 1.6 m |
Planning from a real wall? Use the projector screen size calculator to upload a photo, preview the image to scale and find projectors that fit within your maximum available space. Replacing an existing projector? The projector replacement calculator checks whether this lens covers the ratio your current mount needs.
Distances are lens-to-screen, calculated from the manufacturer's stated throw ratio; allow for lens shift and mounting hardware. Always confirm against the manufacturer's installation guide before fixing mounts.
See it on your wall, to scale
Choose a picture size, then upload a wall photo, or scan the QR code and take it on your phone. We'll show the projected picture at its real size.
Picture size
100" 16:9 · 2.21 m × 1.25 m
On a computer, the QR code sends your phone photo straight back to this page.
Loading the wall preview…
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.
Choose a Mount
Choose a Screen
Video Conferencing
No video conferencing options found in our catalogue.
Professional Installation
Want it installed by our AV experts? We offer professional on-site installation including mounting, cable management, and system configuration.
Your Configuration
Optoma ZK430ST 4K UHD Short Throw Laser Projector × 1£2,306.90
Total£2,306.90
inc. VAT
1
Documents
Delivery & returns
Estimated delivery 14 Sept - 18 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.
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