Optoma

Optoma ZK521ST-B True 4K UHD Short Throw Laser Projector 5,000 Lumens

Regular price $2,699.00 USD

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Optoma ZK521ST-B True 4K UHD Short Throw Laser Projector 5,000 Lumens
$2,699.00 USD
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Optoma ZK521ST-B True 4K UHD Short Throw Laser Projector


Description

The Optoma ZK521ST-B is a professional-grade 4K UHD short throw laser projector engineered for golf simulators, immersive entertainment environments, and always-on commercial installations. Delivering 5,000 lumens of DuraCore laser-powered brightness, it maintains vivid, lifelike images even in well-lit rooms - making it equally at home in a dedicated home sim bay or a busy commercial golf facility. True 4K UHD resolution (3,840 x 2,160) powered by DLP technology renders every fairway, green, and simulator overlay with exceptional sharpness and detail.

The short throw design keeps the projector close to the impact screen, eliminating shadows and reducing the risk of interference from clubs and balls during play. A dedicated Golf Sim color mode enhances sky blues, shadow depth, and natural grass tones for a more convincing course experience, while the Optoma Smart Control App and Optoma Management Suite (OMS) make alignment, monitoring, and long-term management straightforward. With a 30,000-hour maintenance-free laser light source and support for 360-degree and portrait mode operation, the ZK521ST-B is built for years of dependable, lamp-free use.


Key Features

  • True 4K UHD Resolution (3,840 x 2,160): Renders up to 8.3 million pixels via advanced DLP technology - sharp enough for small text, detailed course graphics, and real-time simulator data.
  • 5,000 Lumens Laser Brightness: High-output DuraCore laser maintains vivid, clear images in ambient light conditions found in home or commercial golf simulator spaces.
  • Short Throw Lens (0.79 Throw Ratio): Places the projector closer to the impact screen to reduce shadows and minimize club and ball interference during swings.
  • Golf Sim Color Mode: Dedicated picture mode fine-tuned for golf simulation software like GSPro, enhancing sky blues, greens, and shadow contrast for a more realistic course appearance.
  • 30,000-Hour DuraCore Laser Source: Maintenance-free laser eliminates lamp replacements entirely, providing consistent brightness and lower total cost of ownership over the full lifespan.
  • Flexible Screen Sizes (30" to 300"): Supports multiple aspect ratios (16:9, 16:10, 4:3, 1:1) with geometric correction, horizontal and vertical keystone (+-15 degrees), four-corner adjustment, and vertical lens shift.
  • Optoma Smart Control App (iOS and Android): Enables Smart Fit auto-alignment via smartphone camera, Smart Move obstacle detection, power control, input switching, and status alerts - all from a mobile device.
  • Optoma Management Suite (OMS) Compatible: Cloud-based or local network display management for monitoring, diagnosing, and controlling the projector from anywhere - ideal for commercial and multi-display installations.
  • Ultra-Low Input Lag: 16.7 ms at 4K/60Hz and 8.6 ms at 1080p/120Hz, keeping simulator response time tight and gameplay feeling natural.
  • 360-Degree and Portrait Mode Operation: Fully flexible installation orientation for unconventional sim room configurations or creative commercial setups.
  • Over-the-Air (OTA) Firmware Updates: Keeps the projector current with new features and performance improvements without requiring USB drives or manual intervention.
  • Sustainable Design: Mercury-free laser source, over 50% recycled metal and PCR materials, and 100% recyclable FSC-certified packaging - aligned with Optoma's Green Promise.

Shipping

Ships free! Please email us at service@omahasportsandgames.com for a delivery ETA or to confirm shipping details.


What's Included

  • Optoma ZK521ST-B Laser Projector
  • AC power cord
  • Business remote control
  • 2 x AAA batteries
  • Quick start user manual

Why You'll Love It

The ZK521ST-B is trusted by golf simulation enthusiasts and commercial facility operators who demand uncompromising image quality and long-term reliability in a single projector. Its DuraCore laser technology means zero lamp-related downtime - once it's installed, it simply keeps working, shift after shift, round after round, for up to 30,000 hours. The short throw design was purpose-built for the demands of golf sim environments, giving players more room to swing freely while still filling large impact screens with a sharp, bright image.

The dedicated Golf Sim color mode and compatibility with popular software like GSPro set this projector apart from generic 4K options - your courses will look the way they were meant to look. Built with sustainability in mind, using recycled materials and eco-friendly packaging, it's a projector you can feel confident recommending to clients or installing in your own home. Whether you're building a premium home simulator or outfitting a commercial golf facility, the Optoma ZK521ST-B delivers the performance and peace of mind to justify the investment.


Product Specifications

View Product Specs
Technology DLP
Resolution 4K UHD (3840 x 2160)
Brightness 5,000 Lumens (measured per ISO 21118)
Contrast Ratio 300,000:1 (2,000,000:1 Dynamic)
Native Aspect Ratio 16:9
Compatible Aspect Ratios 4:3, 16:9, 16:10, Full, Auto, Native
Light Source Type Laser (DuraCore)
Light Source Life 30,000 hours (Eco mode)
Throw Ratio 0.79
Projection Distance 0.89m to 2.93m (optical travel); 1m to 10m (mechanism travel)
Focal Length 11.6mm
Screen Size 30" to 300" diagonal
Lens Shift Vertical 104%-125%
Keystone Correction (H/V) +-15 degrees
Horizontal Scan Rate 15-150 KHz
Vertical Scan Rate 24-240 Hz
Uniformity 75%
Input Lag (4K/60Hz) 16.7 ms
Input Lag (1080p/60Hz) 16.7 ms
Input Lag (1080p/120Hz) 8.6 ms
Inputs 2 x HDMI 2.0 (eARC/ARC on HDMI 2), 1 x VGA In
Outputs 2 x USB-A 2.0, 1 x 3D sync out, 1 x Audio 3.5mm
Control Connections 1 x RJ45, 1 x RS232, 1 x 12V trigger
Speaker 1 x 15W
Noise Level 29 dB(A)
3D Compatibility Supports all HDMI 1.4a mandatory 3D formats; up-converts 60Hz to 120Hz or 24Hz to 144Hz
Security Security bar, Kensington Lock, Password protected interface
OSD Languages 27 languages
24/7 Operation Yes
360-Degree Operation Yes
LAN Control Yes
OTA Firmware Updates Yes
Power Supply AC 100-240V, 50-60Hz
Power Consumption (Standby) 0.5W or less
Power Consumption (Eco Mode) 147W @ 110VAC / 146W @ 220VAC
Power Consumption (Bright Mode) 196W @ 110VAC / 193W @ 220VAC
Dimensions (W x D x H) without feet 216 x 274 x 108.5mm (10.8 x 8.5 x 4.3 inches)
Dimensions (W x D x H) with feet 216 x 274 x 114mm (10.8 x 8.5 x 4.5 inches)
Net Weight 3.0 kg / 6.6 lbs
Gross Weight 4.3 kg / 9.4 lbs
Operating Temperature 0-40 degrees C (tolerance +/- 2 degrees C)
Max Operating Altitude 10,000 ft (for 0-30 degrees C)
Max Operating Humidity 80% RH, non-condensing
Compatible Software Optoma Management Suite, Optoma Smart Control App

Manuals & Guides

FAQ

Is the ZK521ST-B compatible with popular golf simulation software like GSPro or E6 Connect?

Yes. The Optoma Smart Control App includes a dedicated Golf Sim picture mode specifically optimized for third-party golf simulation software including GSPro. The mode enhances color tuning for brighter skies, deeper shadows, and natural green tones. The projector's 4K UHD resolution and low input lag also ensure simulator overlays and ball flight data are rendered sharply and responsively.

How close does this projector need to be to the impact screen?

The ZK521ST-B has a throw ratio of 0.79 with an optical projection distance range of 0.89m to 2.93m. This short throw design means you can place the projector much closer to the screen than a standard projector, reducing shadow interference from the golfer and leaving more usable hitting space. Exact distance will depend on your desired screen size - the projector supports 30" to 300" diagonal.

Does this projector require ceiling mounting, or can it be placed on a shelf or table?

The ZK521ST-B supports 360-degree operation and portrait mode projection, making it compatible with ceiling mounts, shelf placements, rear projections, and unconventional mounting angles. Its flexible keystone correction (+-15 degrees horizontal and vertical), four-corner adjustment, and vertical lens shift help dial in the image regardless of mounting position.

How long will the laser light source last, and does it need to be replaced?

The DuraCore laser light source is rated for up to 30,000 hours in Eco mode and requires no replacement - unlike traditional lamp-based projectors. There are no lamps to budget for, no warm-up time, and instant on/off functionality. This makes the ZK521ST-B a genuinely low-maintenance option for both home users and commercial facilities running extended daily sessions.

Can this projector be managed remotely for commercial installations?

Yes. The ZK521ST-B is compatible with Optoma Management Suite (OMS), a cloud-based or local network display management platform. OMS enables remote monitoring, diagnostics, configuration, and control of the projector from anywhere via a single interface with 24/7 real-time monitoring. It also supports LAN control via RJ45, RS232, and 12V trigger for integration with control systems.

What connectivity inputs does the ZK521ST-B support?

The projector includes 2 x HDMI 2.0 inputs (with eARC/ARC support on HDMI 2), 1 x VGA input, 2 x USB-A 2.0 outputs, a 3.5mm audio output, 3D sync out, RJ45 (LAN), RS232, and a 12V trigger. This gives you strong compatibility with modern gaming PCs, consoles, and AV control systems used in simulator setups.

Product specifications table
Specification name Specification Value
Battery size AAA
Battery type Standalone (not-included)
Color pattern Black
Device interface HDMI, VGA, USB, Ethernet
Display resolution 4K ultra HD
Display technology DLP
Translation missing: en.metafields.shopify.keystone-correction-type Manual vertical
Native aspect ratio 16:10, 16:9, 4:3, 1:1
Projector light source Laser

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