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£9.99
- Light Brightness 4,100 Lumen
- Resolution 3840 x 2160 4K UHD
- Aspect Ratio 16:9
- Operating noise 35 dB

Product information
Optoma ZK431ST: The compact 4K UHD laser projector for sophisticated room designs
If you are looking for a reliable and durable projection solution for conference rooms, educational institutions or sophisticated digital signage applications, achieving precise image reproduction is often a challenge. Often, confined spaces restrict installation, or distracting shadows impair the presentation. The Optoma ZK431ST projector offers a well-thought-out solution to precisely these problems. As a compact and easy-to-maintain 4K UHD laser projector, it combines impressive image sharpness with maximum flexibility in placement. Present your visual content in a thoroughly professional and effective manner, even under difficult conditions.
Your benefits at a glance
- UHD 4K laser projector: Crystal-clear images and detailed presentations for complex graphics, tables and visual media.
- Short-throw lens: Create large projections from a very short distance to avoid distracting shadows and glare.
- 4,100 lumens brightness: Clearly visible and high-contrast image content even in brightly lit or intensely illuminated meeting rooms.
- Maintenance-free continuous operation: Up to 30,000 hours of laser lifespan and IP6X certification reduce operating costs in the long term.
Detailed image quality thanks to future-proof 4K laser technology
Experience image quality that shows your presentations and visual content to their best advantage in any business or educational setting. The native UHD resolution ensures that even the finest text structures, CAD drawings or high-resolution graphics remain perfectly legible for all participants. Thanks to the generous brightness of 4,100 lumens, you do not need to darken meeting rooms or classrooms, which supports a collaborative and productive working atmosphere. Supported by a high contrast ratio of 300,000:1 and compatibility with HDR and HLG content, the long-lasting laser light source delivers vivid, natural colours and deep blacks. The result is consistently professional image performance that conveys your messages precisely and without causing eye strain.
Maximum installation flexibility thanks to short throw optics
The Optoma ZK431ST solves the typical space constraints of modern room designs thanks to its special short-throw lens. With a projection ratio of 0.496:1, the device projects an impressively large image onto the wall or projection screen from a minimal distance. This is ideal for smaller meeting rooms, exhibition spaces or narrow corridors where conventional projectors reach their limits. Another key advantage in everyday use: presenters no longer stand directly in the beam of light, reliably preventingdistracting shadows on the projection surface and glare in the presenter’s eyes. The integrated keystone correction of up to 15 degrees horizontally and vertically further facilitates precise alignment if the projector cannot be positioned perfectly centrally.
Reliable 24/7 continuous operation and smart device management
Efficiency and operational reliability play a central role in modern media technology. Designed for maintenance-free 24/7 continuous operation, this laser projector demonstrates its strengths particularly in long-term use. The laser-based light source delivers up to 30,000 hours of consistent performance without any noticeable loss of brightness, completely eliminating the need for costly and time-consuming lamp replacements. Thanks to the IP6X dust-protected optical block, the system remains protected against performance losses even in challenging environments. For administrators, the device also offers advanced control options: the entire projector fleet can be remotely monitored and controlled via the Optoma Management Suite (OMS). This reduces potential downtime and optimises energy consumption directly within the network.
Our conclusion: Why the Optoma ZK431ST is the ideal choice for your premises
The Optoma ZK431ST represents an excellent and future-proof investment for all who wish to combine an extremely sharp 4K UHD image with the benefits of space-saving short throw projection. With its high light output of 4,100 lumens, exceptional reliability in continuous operation and flexible installation options, it effortlessly meets the challenges of modern conference and education rooms. Should you have any questions regarding optimal integration into your existing system or require bespoke consulting, we would be happy to assist you personally via email or telephone. Simply get in touch with us!
Technical data
| Name | Optoma ZK431ST Projector, 3840 x 2160 4K UHD, 4100 Lumen |
|---|---|
| Article number | 1000039954 |
| GTIN/EAN | 5055387669680 |
| Manufacturer SKU | E3P7PN1E116 |
| Lens included | Yes |
| Model name | ZK431ST |
| Projection Distance | Short Throw |
| Brand | Optoma |
| Product Type | Projector |
| Product Series | Optoma Z Series |
| Projector Type | DLP |
| Projector lamp type | Laser |
| ANSI Lumen | 4,100 ANSI Lumen |
| Resolution | 3840 x 2160 4K UHD |
| Aspect Ratio | 16:9 |
| Contrast Ratio | 300,000 :1 |
| Operating noise | 35 dB |
| Operating noise - ECO | 29 dB |
| Lamp life | 30,000 Hour |
| run-time | 24/7 |
| Minimum Projection Distance | 40 cm |
| Maximum Projection Distance | 330 cm |
| Minimum Projection Ratio | 0.496 |
| Maximum Projection Ratio | 0.496 |
| Minimum Focal Length | 7.51 |
| Maximum Focal Length | 7.51 |
| Horizontal Keystone | 15% |
| Vertical Keystone | 15% |
| Inputs | 2x HDMI |
| Outputs | 1x 3,5mm Jack , 2x USB-A |
| Product width | 27.4 cm |
| Product height | 11.4 cm |
| Product depth | 21.6 cm |
| Weight | 2.9 kg |
| Colour | White |
| Delivery contents | Batteries , Power cable , Quick user guide , Remote control |
| Condition | New |
| Warranty | 24 Month |
| Warranty type | Bringin service Service and support information |
Projection distance calculator
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Product safety
| Person responsible for the EU |
|---|
| Optoma Deutschland GmbH |
| Am Nordpark 3 |
| 41069 Mönchengladbach |
| Germany |
| info@optoma.de |