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Optoma  ZK431st Projector


Optoma ZK431st Projector
Optoma ZK431st Projector Projector Front Image AV Connections Angled View Top View
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4K-UHD DLP1 Laser USB-A LAN Rotation-360deg 24-7 Android Apple
Brightness 4100
Contrast 300000:1
Hours 30000

Eco-friendly compact high brightness 4K UHD laser projector

The Optoma ZK431ST is a compact 4K UHD short-throw laser projector designed for education, business and professional presentation environments. Delivering 4,100 ISO lumens of brightness and a 3840 × 2160 resolution, it produces sharp, detailed images with clear text, vibrant colours and a high level of visual clarity, even in rooms with moderate ambient light. Its exceptionally short 0.496:1 throw ratio allows screen sizes from 30 to 300 inches to be projected from a short distance, reducing shadows and making it suitable for classrooms, meeting rooms and space-constrained installations.

Powered by Optoma’s DuraCore laser technology, the ZK431ST offers up to 30,000 hours of light-source life, reducing maintenance requirements and eliminating regular lamp replacements. Flexible installation features include four-corner correction, horizontal and vertical keystone adjustment, and 360-degree projection capability. Connectivity includes two HDMI 2.0 inputs, RS-232 and RJ45 network control, a 12V trigger and USB power outputs. With a built-in 15W speaker, Full 3D support and compatibility with Optoma’s management and smart control software, it provides a versatile, low-maintenance projection solution for professional environments.

Highlights
  • True 4K UHD DLP projection delivers 3840 × 2160 resolution, providing sharp text, detailed graphics and high-definition video for classrooms, meeting rooms and commercial displays.
  • Fixed short-throw optics with a 0.496:1 throw ratio produce large images from close to the screen, reducing presenter shadows and saving installation space.
  • DuraCore laser illumination provides up to 30,000 hours of operation in Eco mode, eliminating conventional lamp replacement and reducing routine maintenance.
  • Smart Fit uses a compatible smartphone camera to assist with automatic screen alignment, while the Optoma Smart Control App provides mobile projector control and image adjustment.
  • Four-corner correction and horizontal and vertical keystone adjustment help align the image on screens where the projector cannot be positioned squarely.
  • Flexible installation supports 360° orientation and portrait projection for digital signage, displays and specialist installations.
  • Optoma Management Suite enables remote monitoring, diagnostics, configuration and scheduling across compatible networked projectors.
  • Two HDMI 2.0 inputs support digital video sources, while USB-A ports provide power for compatible devices; RJ45, RS-232 and a 12V trigger support system integration.
  • Full 3D support, a built-in 15W speaker, password protection and a Kensington lock provision add flexibility for presentations, entertainment and secured installations.
  • Input lag: 4K/ 60Hz: 16.7 ms, 1080P/ 60Hz: 16.7 ms, 1080P/ 120Hz: 8.6 ms

True 4K UHD resolution

Ultra HD 4K resolution delivers sharper, life-like images and richer colours - allowing you to sit closer to the screen and enjoy a more immersive experience.

Our DLP projectors provide CTA (Consumer Technology Association) approved True 4K UHD resolution, capable of projecting 8.3 million on screen pixels. That's four times more detail than Full HD and twice as many from competing technology, which only delivers 4.1 million pixels.

True 4K UHD resolution

Lights on viewing

The versatile Optoma ZK431st combines high brightness and vivid colours for vibrant, true-to-life visuals in any environment*. Make a lasting impression with bigger and bolder presentations any time of day.

*With no direct sunlight or lights directed on screen.

Lights on viewing

Laser technology

Laser projectors use high-quality lasers to create the projected image. In many situations the perceived brightness from laser illumination projectors can be twice that of an equivalent lamp-based model. They also deliver increased efficiency to maintain consistent brightness, superior colour performance, instant on/off and an extraordinary life span of up to 30,000 hours.

Reliable for Long-Term Use with DuraCore Laser

Optoma DuraCore Laser technology delivers consistent brightness, vivid colors, and up to 30,000 hours of lamp-free operation. With instant on/off functionality, reduced power consumption, and no lamp replacements, it offers a lower total cost of ownership and long-term, reliable performance—ideal for business and education environments.

Reliable for Long-Term Use

Short Throw

With a short throw lens, you can project an impressive 100” image from just over a metre away. This allows you to place the projector closer to the wall, reducing shadows so you can present with ease.

HDR and HLG compatible

Capable of receiving and displaying both HDR10 and Hybrid Log Gamma (HLG) HDR content. This Optoma projector allows you to see far more detail and texture. Objects look more solid and lifelike and the extra detail creates a greater sense of depth.

HDR and HLG compatible

Tailored Display Modes for Business and Education 

Tailored display modes for business and education. Optoma projectors deliver long-lasting image precision with DLP technology, ensuring accurate, vibrant colors that bring every detail to life.

Tailored Display Modes

Next generation display management

Smart Control at Your Fingertips 

Optoma Smart Control app streamlines device management and intelligently adjusts screen alignment across Optoma displays, all from your mobile device. From setup to daily operation, it acts as an intelligent remote, enabling control of key functions such as power on/off, input source switching, status alerts, and more, helping users save time and deliver a better viewing experience in any space.

Smart Control App

Manage, Monitor, and Diagnose—All from One Place

Optoma Management Suite (OMS™) is an intuitive (cloud-based or via local networking) display management solution, designed to streamline operations by monitoring, diagnosing and controlling audio visual displays from anywhere via a single plarform. With an easy-to-use interface and 24/7 real-time monitoring, OMS enables users to check the status of display devices and make configurations to optimise performance.

 Optoma Management Suite

Instant auto-alignment with Smart Fit

Smart Fit uses your smartphone’s camera to detect the screen frame and automatically correct the image alignment, significantly reducing installation effort.

360 projection*

With 360° projection,* images can be displayed in any orientation, giving you the freedom and versatility to install this projector in the desired location.

*For more information please refer to the user manual

Full 3D

Optoma projectors can display true 3D content from almost any 3D source, including 3D compatible graphics cards, 3D broadcasting and the latest generation 3d media servers.

3D images

24/7 operation

Optoma projectors have been designed to operate 24 hours a day in standard orientation. Perfect for applications where prolonged periods of use is required. Subject to 24 hour terms and conditions.

24/7 operation

Auto power off

There may be instances when the projector is left running when not in use. To help save energy, the "auto power off" feature automatically turns off the projector after a set period of time if it is not being used

Integrated speaker

Complete your home entertainment experience with the convenience of a powerful built-in speaker for exceptional sound quality and an easy set up without the need for costly external speakers.

USB-Power

Use the USB-A port to power external devices (5V/1.5A)

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Frequently Asked Questions (FAQ)

The Optoma ZK431st Projector has a resolution of 4K UHD (3840 x 2160).

The Optoma ZK431st Projector has a brightness of 4100 lumens for up to 30000 hours.

The Optoma ZK431st Projector has a throw ratio of 0.4960:1.

The Optoma ZK431st Projector has a throw distance of 0.4 - 3.3 m.




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