OPTOMA 

OPTOMA ZK420UST 4K UHD 4200lm 0.25:1 TR

Mfg Part Number:  ZK420UST  
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Price: $3,978.18
Quantity:
More to Come
Last Updated: Jan 17, 2026
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Ultra Short Throw Projector featuring a sleek compact design

ZK420UST is designed for various usage scenarios such as a conference rooms, training rooms, simulations, classrooms, and more. Capable of generating a 100" image from less than 12 inches away from the projection surface, the ZK420UST features a compact design engineered for space constrained environments

Clarity, color and contrast

With 4K UHD resolution, 500,000:1 Contrast Ratio and DuraCore Laser Technology, ZK420UST delivers sharp, vibrant images with elite color performance ideal for education, corporate, and simulation spaces.

Effortless installations

With 360-degree rotation, portrait installation, and geometric correction, you can position the projector at any angle for professional applications. Whether projecting onto a regular screen or a tall wall, portrait installation lets you explore new angles and adapt to any space.

Streamline Your Setup with HDBaseT 3.0

HDBaseT - Uncompromising, uncompressed 4K UHD video, audio, network and control commands all delivered on a single RJ45 cable capable up to 100 meters/328 feet without signal loss makes installation hassle-free. HDBaseT simplifies cabling requirements installation complexity saving time and reducing costs.

Seamless management and updates

Compatible with the cloud-based Optoma Management Suite (OMS®) platform, IT managers and service providers can remotely check the device status, make configurations to optimize performance and broadcast alerts or announcements; streamlining device management, simplifying operations and maximizing efficiency.

Main Specification
General Information
Manufacturer Optoma Technology
Manufacturer Part Number ZK420UST
Manufacturer Website Address http://www.optomausa.com
Brand Name Optoma
Product Line DuraCore
Product Model ZK420UST
Product Name ZK420UST 4K UHD DuraCore Laser Projector
Product Type DLP Projector
Technical Information
Projection Method Front
3D Type 3D
High Dynamic Range (HDR) Yes
High Dynamic Range (HDR) Type HLG
High Dynamic Range (HDR) Type HDR10
Display & Graphics
Native Aspect Ratio 16:9
Projection Lens
Throw Type Ultra Short Throw
Maximum Focal Length 3.70 mm
Minimum Diagonal Image Size 100"
Maximum Diagonal Image Size 12.50 ft
Minimum Projection Distance 21.78"
Maximum Projection Distance 32.68"
Lamp
Number of Lamps 1
Lamp Type Laser/Phosphor
Economy Mode Lamp Life 30000 Hour
Image
Standard Mode Brightness 4200 lm
Throw Ratio 0.25 to 1
Contrast Ratio 500,000:1
Minimum Vertical Sync 24 kHz
Maximum Vertical Sync 240 kHz
Video
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 255 W
Standby Power Consumption 500 mW
Physical Characteristics
Height 4.3"
Width 12.9"
Depth 12.9"
Miscellaneous
Application/Usage Training Room
Application/Usage Conference Room
Application/Usage Simulator
Application/Usage Class Room
Application/Usage Education
Application/Usage Corporate
Package Contents
  • ZK420UST 4K UHD DuraCore Laser Projector
  • QSG
  • Power Adapter and Cable
  • Remote
  • 2 x Batteries (AAA)
Warranty
Limited Warranty 3 Year
Additional Warranty Information

3 Year Warranty (5 Year or 12,000 Hr. Light Source)

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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