OPTOMA 

OPTOMA ZK521ST WHITE 4K UHD SHORT THROW PROJECTOR, 5000 LUMENS 0.79:1 THROW RATI

Mfg Part Number:  ZK521ST  
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Price: $2,402.50
Quantity:
In Stock: 1
Last Updated: Sep 02, 2026
No Sales Tax except these states
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Future-Proofed. Sustainable. Cost-Effective.

Optoma's new generation of lamp-free laser projectors is designed to deliver exceptional visual quality, simplified setup and control, and long-term value across business, education, or simulation environments.

Clear, Shadow-Free Projection for Ambient Light Environments

With 5,000 lumens of high brightness, this projector delivers Full HD visuals even in ambient light. Its short-throw design reduces shadows even in limited spaces, making it ideal for meetings, classrooms, and commercial environments.

Exceptional 4K viewing experience

This projector delivers up to 8.3 million pixels in 4K UHD (3,840 × 2,160) resolution using advanced DLP technology, producing exceptionally sharp images where even small text and detailed graphs remain clear and easy to read.

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.

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.

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.

Four-corner adjustment

Correct image distortion effortlessly with four-corner adjustment. Just tap and drag any corner to reshape the frame in real time.

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.

Always Stay Updated

This product supports over-the-air (OTA) firmware updates, keeping your projector up to date without the need for USB drives. Updates are delivered automatically, and users simply click Download to install them. Updates may include new features, performance enhancements, and security improvements. This helps reduce IT workload and ensures reliable operation.

Main Specification
General Information
Manufacturer Optoma Technology
Manufacturer Part Number ZK521ST
Manufacturer Website Address http://www.optomausa.com
Brand Name Optoma
Product Model ZK521ST
Product Name 4K Laser Short Throw Projector
Product Type DLP Projector
Technical Information
Projection Method Front
3D Type 3D
Display & Graphics
Native Aspect Ratio 16:9
Projection Lens
Throw Type Short Throw
Maximum Focal Length 11.60 mm
Minimum Diagonal Image Size 30"
Maximum Diagonal Image Size 25 ft
Minimum Projection Distance 39.37"
Maximum Projection Distance 32.81 ft
Lamp
Number of Lamps 1
Lamp Type Laser
Economy Mode Lamp Life 30000 Hour
Image
Standard Mode Brightness 5000 lm
Throw Ratio 0.79 to 1
Contrast Ratio 300,000:1
Video
Video Signal Format NTSC
Video Signal Format PAL
Video Signal Format SECAM
Video Signal Standard HDTV
Output Scan Format 2160p
Audio
Speaker Included Yes
Interfaces/Ports
HDMI Yes
USB Yes
Network (RJ-45) Yes
Battery Information
Batteries Included Yes
Power Description
Voltage Frequency 60 Hz
Operating Power Consumption 147 W
Standby Power Consumption 500 mW
Physical Characteristics
Product Color White
Color Family White
Form Factor Wall Mountable
Height 4.3"
Width 8.5"
Depth 10.8"
Weight (Approximate) 6.61 lb
Miscellaneous
Application/Usage Meeting
Application/Usage Commercial
Application/Usage Business
Application/Usage Class Room
Application/Usage Board Room
Application/Usage Education
Application/Usage Training
Application/Usage Corporate
Package Contents
  • 4K Laser Short Throw Projector
  • AC Power Cord
  • Remote Control
  • 2 x AAA Batteries
  • Quick Start User Manual
Warranty
Limited Warranty 3 Year
WARNING:: The plastic used in cable products can expose you to lead and lead components, chemicals known to the State of California to cause cancer, birth defects, or other reproductive harm. For more information go to www.P65Warnings.ca.gov
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