Key Features
- True 4K UHD Resolution
- 4,100 ANSI Lumens Brightness
- 0.496:1 Short Throw Ratio
- 30,000-Hour Laser Life
- Smart Mobile Setup Control
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Product Summary
Optoma ZK431ST 4K UHD 4,100-Lumen Short Throw Laser Projector
The Optoma ZK431ST is a compact 4K UHD short throw laser projector designed for education, business, simulation, museums, and immersive presentation environments. Delivering True 4K UHD resolution, 4,100 lumens of brightness, and a 0.496:1 short throw lens, the ZK431ST produces stunning, crystal-clear images from just a few feet away. Powered by DuraCore laser technology, it offers up to 30,000 hours of virtually maintenance-free operation, while advanced installation tools and Optoma Smart Control compatibility simplify setup in virtually any room.
Stunning True 4K UHD Projection
Present every detail with exceptional clarity.
- Native 3840 × 2160 (True 4K UHD) resolution
- Screen sizes from 30" to 300"
- Crisp text and graphics
- Outstanding image detail
- Ideal for presentations, education, and digital content
The native 4K resolution ensures sharp visuals that remain clear and readable even on large projection screens.
Short Throw Performance
Create large images in compact spaces.
- 0.496:1 short throw ratio
- Projects 30"–300" images
- Large image from approximately 2–11 feet
- Minimizes presenter shadows
- Maximizes available room space
The short throw design is ideal for classrooms, conference rooms, simulation environments, and other installations where space is limited.
Bright Laser Projection
Deliver vibrant images in everyday environments.
- 4,100 ANSI lumens brightness
- Excellent visibility in controlled to moderate ambient light
- Rich colors and sharp contrast
- Consistent brightness over time
High brightness ensures presentations remain clear and engaging in classrooms, meeting rooms, and collaborative workspaces.
DuraCore Laser Technology
Maintenance-free performance for years.
- DuraCore laser light source
- Up to 30,000-hour lifespan
- No lamp replacements
- Reduced maintenance costs
- Instant on/off operation
Laser illumination provides reliable long-term performance while eliminating the downtime and expense associated with traditional projector lamps.
Flexible Installation
Adapt to virtually any projection environment.
- Four-corner geometric correction
- ±15° vertical keystone adjustment
- 360° projection capability
- Flexible mounting options
- Professional image alignment
Advanced installation features make it easy to achieve a perfectly aligned image in classrooms, boardrooms, museums, and creative installations.
Smart Setup & Control
Simplify installation and daily operation.
- Optoma Smart Control App compatible
- Mobile projector control
- Guided screen alignment
- Remote management
- Easy system configuration
Control and align the projector directly from a compatible mobile device for faster installation and simplified operation.
Built for Professional Environments
Reliable performance for continuous commercial use.
- Compact, lightweight design
- Energy-efficient laser engine
- Low total cost of ownership
- Commercial-grade reliability
- Long operating life
Designed for business and education, the ZK431ST delivers dependable performance while minimizing maintenance and operating costs.
Optoma ZK431ST True 4K UHD Short Throw Laser Projector
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Optoma ZK431ST True 4K UHD Short Throw Laser Projector
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Current availability for this model
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On qualifying orders to the lower 48 states
Project & Volume Pricing
Special pricing available for larger orders
Education & Government Purchase Orders
Accepted for qualified organizations
Financing Available with Shop Pay
Special Pricing Available
Education • Government • Nonprofits • Corporate • Volume Orders
✓ Tax-Exempt Purchasing Available
Product Description
Optoma ZK431ST 4K UHD 4,100-Lumen Short Throw Laser Projector
The Optoma ZK431ST is a compact 4K UHD short throw laser projector designed for education, business, simulation, museums, and immersive presentation environments. Delivering True 4K UHD resolution, 4,100 lumens of brightness, and a 0.496:1 short throw lens, the ZK431ST produces stunning, crystal-clear images from just a few feet away. Powered by DuraCore laser technology, it offers up to 30,000 hours of virtually maintenance-free operation, while advanced installation tools and Optoma Smart Control compatibility simplify setup in virtually any room.
Stunning True 4K UHD Projection
Present every detail with exceptional clarity.
- Native 3840 × 2160 (True 4K UHD) resolution
- Screen sizes from 30" to 300"
- Crisp text and graphics
- Outstanding image detail
- Ideal for presentations, education, and digital content
The native 4K resolution ensures sharp visuals that remain clear and readable even on large projection screens.
Short Throw Performance
Create large images in compact spaces.
- 0.496:1 short throw ratio
- Projects 30"–300" images
- Large image from approximately 2–11 feet
- Minimizes presenter shadows
- Maximizes available room space
The short throw design is ideal for classrooms, conference rooms, simulation environments, and other installations where space is limited.
Bright Laser Projection
Deliver vibrant images in everyday environments.
- 4,100 ANSI lumens brightness
- Excellent visibility in controlled to moderate ambient light
- Rich colors and sharp contrast
- Consistent brightness over time
High brightness ensures presentations remain clear and engaging in classrooms, meeting rooms, and collaborative workspaces.
DuraCore Laser Technology
Maintenance-free performance for years.
- DuraCore laser light source
- Up to 30,000-hour lifespan
- No lamp replacements
- Reduced maintenance costs
- Instant on/off operation
Laser illumination provides reliable long-term performance while eliminating the downtime and expense associated with traditional projector lamps.
Flexible Installation
Adapt to virtually any projection environment.
- Four-corner geometric correction
- ±15° vertical keystone adjustment
- 360° projection capability
- Flexible mounting options
- Professional image alignment
Advanced installation features make it easy to achieve a perfectly aligned image in classrooms, boardrooms, museums, and creative installations.
Smart Setup & Control
Simplify installation and daily operation.
- Optoma Smart Control App compatible
- Mobile projector control
- Guided screen alignment
- Remote management
- Easy system configuration
Control and align the projector directly from a compatible mobile device for faster installation and simplified operation.
Built for Professional Environments
Reliable performance for continuous commercial use.
- Compact, lightweight design
- Energy-efficient laser engine
- Low total cost of ownership
- Commercial-grade reliability
- Long operating life
Designed for business and education, the ZK431ST delivers dependable performance while minimizing maintenance and operating costs.
Technical Details
Specifications
Lumens (ANSI)
4100
Native Resolution
3840 x 2160
Display Technology
DLP
Aspect Ratio
16:9 (4K UHD)
Purchase Orders
We accept Purchase Orders from all Schools, Universities, Major Government Agencies and Not-for-profit Organizations within the United States and Canada Only. All Purchase Orders are subject to approval.
Simply email, fax or mail your purchase order and please ensure your P/O contains the following information:
- Contact name, email address & telephone number. Note: An email address is required to receive order/shipping confirmation.
- Billing name & address.
- Shipping address.
- Tax ID#. For tax exempt orders, please see the Tax Exempt information below.
- Purchase Order Number.
- Date needed. Please note: Up to 3–5 days are needed to process requests. This does not include delivery time.
- Authorized signature. Your purchase order can only be accepted when accompanied by the signature of the officer authorizing the purchase and when submitted on your organization's official purchase order form or letterhead.
- Purchase orders must be in excess of $75 excluding shipping. All prices are in USD.
- Sales tax is charged only on orders shipping to the state of Florida.
Submit Your Purchase Order
Please email completed purchase orders to Sales@OfficeWonderland.com .
You can also fax it to: (786) 916-5963
Or mail it to:
OfficeWonderland.comAttn: Purchase Orders
20400 NE 16th PL
North Miami Beach, FL 33179
Once we have all the information requested above, an account and order will be created.
Please Note
- Please allow 3–5 days for us to process requests.
- Confirmation emails are sent when the order is placed and another email is sent when the order ships.
- Please make all checks payable to OfficeWonderland Ltd. at the address referenced above.
- Payments on PO orders are due within 30 days.
Terms
We operate with a Net 30 Day payment arrangement for approved purchase orders. Payment is expected to be made in full not more than 30 days after your order is processed.
