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Optoma ZK431ST
Laser DLP 4K UHD 3D Ready projector - HDR/HLG - 4100 Lumens - Short throw - HDMI/USB/Ethernet - Built-in speaker 15 W
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Spectacular 4K projection, even in confined spaces
Compact and high-performance, the Optoma ZK431ST makes 4K UHD projection accessible to classrooms, meeting rooms and professional installations. Its native resolution of 3,840 x 2,160 pixels accurately reproduces text, graphics, videos and presentations, while its brightness of 4,100 lumens preserves image clarity and brilliance in moderate ambient light. Thanks to its short-throw lens with a projection ratio of 0.496:1, it can display an image from 30 to 300 inches with limited throw distance. This setup frees up space in the room and reduces shadows that may be cast by the presenter.
Flexible installation, designed for every environment
The ZK431ST easily adapts to the constraints of any space. Its horizontal and vertical keystone correction of ±15°, combined with four-corner adjustment, simplifies image alignment when the projector cannot be placed perfectly facing the screen. Its 360° projection capability also allows it to be installed in different orientations to meet the needs of classrooms, businesses or specialized display setups. Compatible with the Optoma Smart Control app, it makes installation, screen alignment and control from a mobile device easier. Its compact size and net weight of only 2.9 kg also simplify integration.
DuraCore laser technology: endurance and peace of mind every day
At the heart of the ZK431ST, Optoma's DuraCore laser technology delivers up to 30,000 hours of operation in Eco mode. This lamp-free light source reduces maintenance tasks, avoids periodic replacements and minimizes downtime. The projector is also designed to operate 24/7. Its dynamic contrast ratio reaching up to 2,000,000:1 enhances image depth, while its compatibility with UHD content and HDMI 1.4a 3D formats expands playback possibilities. Its comprehensive connectivity, built-in 15 W speaker and compatibility with Optoma Management Suite make it a versatile audiovisual solution that is easy to manage.
Main features:
- 3D Ready DLP projector
- Short throw
- Light source: DuraCore laser
- Native resolution: 4K UHD, 3,840 x 2,160 pixels
- Brightness: 4,100 lumens / Contrast: 300,000:1
- Native aspect ratio: 16:9 / Compatible aspect ratios: 4:3, 16:9, 16:10, Full, Auto and Native
- Projection ratio: 0.496:1
- Horizontal keystone correction: ±15° / Vertical keystone correction: ±15°
- Geometric adjustment: four-corner correction
- Horizontal scan frequency: 15 to 150 kHz / Vertical scan frequency: 24 to 240 Hz
- Light uniformity: 75%
- Image size: from 30 to 300 inches
- Projection distance: from 12.99 to 129.92 inches, i.e. approximately 0.33 to 3.30 m
- Light source life: up to 30,000 hours in Eco mode
- Focal length: 7.51 mm
- Native offset: 114%
- Video inputs: 2 HDMI 2.0 and 1 VGA
- Outputs: 2 USB-A 2.0, 1 3D sync output and 1 3.5 mm mini-jack audio output
- Control and management: 1 RJ45, 1 RS232 and 1 12 V trigger
- Computer compatibility: VGA, SVGA, XGA, 720p, WXGA, SXGA, SXGA+, UXGA, 1080p and WUXGA
- Built-in speaker: 1 x 15 W
- Dimensions : 216 x 274 x 108.5 mm
- Net weight: 2.9 kg
Select your criteria
General information |
Product name |
Optoma ZK431ST |
Brand |
Optoma | |
Model |
E3P7PN1E116 | |
Main characteristics |
Format |
Office |
Light source |
Laser | |
Technology |
DLP | |
Resolution |
3840 x 2160 pixels | |
4K UHD resolution(s) |
Yes | |
HDR (High Dynamique Range) |
Yes | |
Display format(s) |
4:3 | |
| 16:9 | ||
Brightness |
4100 Lumens | |
Contrast |
300000 /1 | |
Gaming |
Gamer |
No |
Lens |
Lens Shift |
No |
Focal type |
Short throw | |
Autofocus |
No | |
Video Signals |
Supported video resolution(s) |
Ultra HD |
| 4K | ||
| 480i | ||
| 480p | ||
| 576p | ||
| 576i | ||
| 720p | ||
| 1080i | ||
| 1080p | ||
Supported computer science resolution(s) |
1024 x 768 pixels | |
| 1280 x 800 pixels | ||
| 640 x 480 pixels | ||
| 800 x 600 pixels | ||
| 1280 x 1024 pixels | ||
| 1920 x 1080 pixels | ||
| 1600 x 1200 pixels | ||
| 1280 x 720 pixels | ||
| 3840 x 2160 pixels | ||
3D compatible |
Yes | |
Min vertical frequency |
24 Hz | |
Max vertical frequency |
240 Hz | |
Lamp |
Lamp lifespan |
30000 Hour(s) |
Sound level |
Min sound level |
29 dB |
Max sound level |
35 dB | |
Equipment |
With display |
No |
Remote control |
Yes | |
Sound power |
1 X 15 W | |
Network |
No | |
Smart |
No | |
Android TV |
No | |
Interactive model |
No | |
Connectivity |
Video inputs |
3 X HDMI Female |
HDMI standard |
HDMI 2.0 | |
Audio outputs |
3.5mm Jack Female Stereo | |
Additional connector(s) |
1 X RJ45 | |
| USB Type A Female | ||
| 1 X Serial (RS-232) | ||
Physical characteristics |
Width |
274 mm |
Height |
114 mm | |
Depth |
216 mm | |
Weight |
2.9 kg | |
Power supply |
Consumption |
124 W |
Standby consumption |
0.5 W | |
Warranties |
Commercial warranty |
Seller 2 years
|
Legal warranty |
See terms & conditions
|
|
Safety Information |
Responsible person |
Optoma Benelux BV |
Postal address |
Europalaan 770 D 1363BM Almere The Netherlands | |
Electronic Address |
safety@optoma.com |
See all Optoma products
Product referenced on 20 Jul 2026
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