Description
Optoma ZH451ST Short Throw Laser Projector
The Optoma ZH451ST is a compact short throw laser projector designed for classrooms, meeting rooms, golf simulators, exhibitions, and commercial spaces where a large image is needed from a short installation distance. With 4,200 lumens brightness, Full HD 1080p resolution, DuraCore laser technology, and up to 30,000 hours of light source life, it delivers bright, reliable, and low-maintenance projection for everyday professional use.
Its short throw design helps reduce shadows and allows large screen sizes even when space is limited, making it suitable for wall-mounted, ceiling-mounted, tabletop, and simulation setups.
Throw Distance
| Screen Size (16:9) | Installation Distance |
|---|---|
| 92″ (204 × 115cm) | 1.0m |
| 100″ (221 × 125cm) | 1.1m |
| 110″ (244 × 137cm) | 1.2m |
| 120″ (266 × 149cm) | 1.3m |
| 130″ (288 × 161cm) | 1.5m |
| 200″ (443 × 249cm) | 2.2m |
| 300″ (664 × 374cm) | 3.3m |
Quick Highlights
- Brightness: 4200 lumens
- Contrast: 300,000:1 (Dynamic 2,000,000:1)
- Resolution: Full HD 1080p (accepts 4K input)
- Light Source: DuraCore laser (up to 30,000 hours)
- HDR Support: HDR10 & HLG compatible
- Connectivity: 2 × HDMI, USB-A, RS232, RJ45
- Audio: Built-in 15W speaker
- Keystone: Horizontal & vertical correction
- 360° Installation & Portrait Mode
- Dust Resistant: IP6X certified
- Warranty: 3 Years Optoma Australia
The Optoma ZH451ST short throw projector delivers 4,200 lumens of brilliant Full HD 1080p visuals in a compact short-throw design, enabling large, shadow-free projections even in limited spaces. Engineered for 24/7 reliability, it offers a low-maintenance, energy-efficient laser solution with centralized IT management and smart control for corporate, education, or commercial uses.
- 4,200-lumen brightness - Clear projection for spaces with ambient light
- 30,000h laser life - DuraCore laser ensures long-term reliability and low TCO
- Sustainable design - 50% recycled metal and PCR materials
- Optoma Management Suite (OMS) - Enables centralized IT monitoring and control across multiple networked devices
Brighter, Greener, and Longer-Lasting Projection




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.
Key Features
Over-the-air Update
Compact Size
Low Maintenance
Eco-Friendly DuraCore Laser
High Brightness for Ambient Light
Flexible Configuration
Optoma Management Suite
Short Throw
Immersive Golf Powered by Optoma
Long Lifespan
Clear, Shadow-Free Projection for Ambient Light Environments
With 4,200 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.

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.

Immersive Golf Simulation
Powered by Optoma

Manage, Monitor, and Diagnose—All from One Place
Optoma Management Suite (OMS™) is an intuitive cloud-based or local networking display management solution, designed to streamline operations by monitoring, diagnosing and controlling audio visual displays from anywhere via a single platform. 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.

Flexible Setup for Any Spaces
With ±30° keystone correction, and support for 360-degree or portrait mode projection, this projector offers flexible installation in any space.
H/V Keystone Correction

Four-Corner Adjustment

Vertical Lens Shift

Designed for Sustainability
Aligned with Optoma’s Green Promise, this projector features an energy-efficient, mercury-free DuraCore laser light source. Built with over 50% recycled metal and PCR materials and packaged in 100% recyclable packaging, it is designed to reduce material waste and power consumption in support of sustainability.
Eco-Friendly Packaging
Eco-friendly packaging produced with FSC-certified paper and made with recycled and reusable materials.

Sustainable Materials
Use of environmentally friendly materials for product chassis and during production.

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Specification
| Display | |
|---|---|
| Technology | DLP® |
| Resolution | 1080p Full HD (1920x1080) |
| Brightness | 4,200 Lumens |
| Contrast Ratio | 300,000:1 |
| Contrast Ratio (Dynamic) | 2,000,000:1 |
| Native Aspect Ratio | 16:9 |
| Aspect Ratio - Compatible | 4:3, 16:9, 16:10, Full, Squeeze, Native |
| Keystone Correction - Horizontal | +/-15° |
| Keystone Correction - Vertical | +/-15° |
| Horizontal Scan Rate | 15~135 KHz |
| Vertical Scan Rate | 24~120 Hz |
| Uniformity | 75% |
| Screen Size | 30"~300" |
| Light Source | |
| Light Source Type | Laser |
| Light Source Life | 30,000 hours (Eco mode) |
| Optical | |
| Throw Ratio | 0.496 |
| Projection Distance | 1m~10m (mechanism travel) |
| Focal Length | 7.51mm |
| Native Offset | 116% +/-5% |
| Connectivity | |
| Connections - Inputs | HDMI 2.0 x2 VGA In x1 Audio 3.5mm x1 |
| Connections - Outputs | USB-A 2.0 x2 3D sync out x1 Audio 3.5mm x1 |
| Connections - Control | RJ45 x1 RS232 x1 12V Trigger x1 |
| General | |
| Noise Level (min) | 29 dB(A) |
| Noise Level (max) | 31 dB(A) |
| PC Compatibility | VGA, SVGA, XGA, 720p, WXGA, SXGA, SXGA+, UXGA, 1080p, WUXGA |
| 2D Compatibility | NTSC, PAL, SECAM, SDTV, HDTV, UHD |
| 3D Compatibility | Supports all HDMI 1.4a mandatory 3D formats (Frame pack, side-by-side, top-bottom) and up converts frame rate from 60Hz to 120Hz or 24Hz to 144Hz |
| Security | Security bar, Kensington Lock, Password protected interface |
| OSD / Display Languages | 27 languages: Arabic, Czech, Danish, Dutch, English, Farsi, Finnish, French, German, Greek, Hungarian, Indonesian, Italian, Japanese, Korean, Norwegian, Polish, Portuguese, Romanian, Russian, Simplified Chinese, Spanish, Swedish, Thai, Traditional Chinese, Turkish, Vietnamese |
| 24/7 Operation | Yes |
| 360° Operation | Yes |
| Operating Conditions | Max Temperature (operating): 0 ~ 40°C; Tolerance +/- 2°C Max Altitude (operating): 10,000 ft. for 0°C~30°C Max Humidity (operating): 80% RH, non-condensing |
| Remote Control | Business remote control |
| Speaker Count & Watts Per Speaker | 1 x 15W |
| Input Lag | 4K/60Hz: 16.7 ms 1080P/60Hz: 16.7 ms 1080P/120Hz: 8.6 ms |
| In the Box | |
| Included Accessories | AC power cord Remote control Quick start user manual |
| Networking | |
| LAN Control | Yes |
| 24/7 Operation | Yes |
| 360° Operation | Yes |
| Power | |
| Power Supply | AC 100 ~ 240 V, 50 ~ 60 Hz |
| Power Consumption (standby) | ≤0.5 W |
| Power Consumption (eco mode) | 120 W@110VAC 118 W@220VAC |
| Power Consumption (bright mode) | 170 W @110VAC 168 W @220VAC |
| Weight and Dimensions | |
| Dimensions (W x D x H) | W/o feet: 216 x 274 x 108.5mm (10.8 x 8.5 x 4.3 inches) With feet: 216 x 274 x 114mm (10.8 x 8.5 x 4.5 inches) |
| Gross Weight | 4.5 kg / 9.9 lbs |
| Net Weight | 3.0 Kg / 6.6 lbs |