Optoma
Optoma UHZ36STe 4K UHD Short Throw Laser Projector
Similar brightness4,000 lm
UHD4,000 lm30-300"
£1,998.74inc. VAT
In stock
UK stockOptoma
Optoma ZK431ST 4K UHD Short Throw DuraCore Laser Projector
£1,999.99inc. VAT
£1,666.66 ex. VAT
In stock, dispatched within 7 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
Resolution4K UHD (3840x2160)
Brightness4100 lm
Contrast ratio300,000:1
Contrast ratio - dynamic2,000,000:1
Native aspect ratio16:9
Aspect ratio - compatible4:3, 16:9, 16:10, 21:9, 32:9
Input compatibilityHDR and HLG compatible
Description
The Optoma ZK431ST is a compact true 4K UHD short throw DuraCore laser projector delivering 4,100 lumens at native 3840x2160. The fixed 0.496:1 lens produces a 100 inch image from roughly 1.1m, combining genuine 4K resolution with close-mounting in a chassis up to 34% smaller than previous Optoma models.
HDR and HLG compatibility widen the dynamic range on supported content, and aspect ratio support extends to 21:9 and 32:9 as well as standard formats.
The DuraCore laser light source runs up to 30,000 hours with no lamp replacements, cutting power consumption by up to 45% against an equivalent Optoma lamp projector.
Projection distance runs from 0.33m to 3.3m for 30 to 300 inch screens, with 360-degree and portrait projection.
Optoma Management Suite (OMSC) provides remote monitoring and scheduling, and the Smart Control app handles setup from a mobile device. Connectivity includes dual HDMI 2.0 with one eARC port.
Key features
True 4K UHD laser projection
4,100 lumens at native 3840x2160 with HDR and HLG compatibility.
Short throw lens
Fixed 0.496:1 lens gives a 100 inch image from around 1.1m, keeping presenters out of the beam.
Flexible formats and mounting
Supports 21:9 and 32:9 alongside standard formats, with 360-degree and portrait projection.
Optoma Management Suite (OMSC)
Remote management, real-time monitoring and scheduling across multiple projectors.
Optoma Smart Control app
Command, control and correct the image from a phone or tablet.
30,000 hour laser life
DuraCore laser rated for 30,000 hours with up to 45% lower power draw.
Technical specifications
Choose a section to view its specifications.
Display (8)
- Display technology
- DLP
- Resolution
- 4K UHD (3840x2160)
- Brightness
- 4100 lm
- Contrast ratio
- 300,000:1
- Contrast ratio - dynamic
- 2,000,000:1
- Native aspect ratio
- 16:9
- Aspect ratio - compatible
- 4:3, 16:9, 16:10, 21:9, 32:9
- Screen size
- 0.76m - 7.62m (30in - 300in) diagonal
Connectivity (3)
- Input compatibility
- HDR and HLG compatible
- Inputs
- 1x HDMI 2.0, 1x HDMI 2.0 (eARC)
- Outputs
- 1x audio 3.5mm, 2x USB-A power 1.5A
Certifications & Warranty (1)
- Warranty
- 12 months
General (12)
- Light source
- DuraCore Laser
- Laser life
- 30000 hours
- Throw type
- Short throw
- Throw ratio
- 0.496:1
- Projection distance
- 0.33m - 3.3m
- Zoom type
- Fixed
- Focal length
- 7.51 mm
- Native offset
- 114%
- Keystone correction
- +/-15 degrees horizontal and vertical
- Orientation
- 360-degree and portrait projection
- Control
- RS232, RJ45, 12V trigger, 3D sync, OMSC
- Uniformity
- 75%
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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Video Conferencing
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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 ZK431ST 4K UHD Short Throw DuraCore Laser Projector × 1£1,999.99
Total£1,999.99
inc. VAT
1
Documents
Delivery & returns
Estimated delivery 20 Sept - 24 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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Optoma
Optoma UHZ35ST 4K UHD Short Throw Laser Projector
Less bright3,500 lm−600 lm
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£1,947.71inc. VAT
In stock
UK stockNeed help specifying this for your space?
Ask Andrew. He knows the full catalogue and can advise on installation, mounting and compatible AV systems.
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