Optoma ZH451ST 4200-Lumen Full HD Short-Throw Laser DLP Projector

Simulator bays and conference rooms with tight space get a bright Full HD image from the Optoma ZH451ST, a 4,200-lumen short-throw laser DLP projector.

It fills a 30 to 300 inch screen from about 2 to 11 feet and has IP6X dust certification, and Robertson AV can quote multi-room orders.

Key Features

• Brightness: 4,200 lumens
• Resolution: 1080p Full HD (1920 x 1080)
• Laser light source: 30,000 hours
• Throw ratio: 0.496:1, Fixed short-throw lens lens
• Operation: 24/7
• Connections: 2 x HDMI 2.0, VGA in, 2 USB-A, audio in/out, RJ-45, 12V trigger, 3D sync, RS-232
• Built-in sound: Mono speaker
• HDR: HDR10 and HLG compatible

Ideal For

• Classrooms: low-maintenance laser
• Meeting rooms: tight installs
• Training rooms: easy setup

Optoma ZH451ST 4,200-Lumen Full HD 1080p Short-Throw Laser DLP Projector Specifications

Optoma ZH451ST technical specifications, grouped by feature

Specification	Details
Picture & Optics
Resolution	1080p Full HD (1920 x 1080)
Brightness	4,200 lumens
Contrast Ratio	300,000:1 (2,000,000:1 dynamic)
Throw Ratio	0.496:1
Lens	Fixed short-throw lens
Projection Distance	12.99 – 129.92 in
Keystone Correction	Horizontal and vertical +/-15 degrees
Light Source
Light Source	Laser, 30,000 hours
Power & Environment
Noise Level	29 dB min; 36 dB max
Power Consumption	118 W min; 170 W max
Physical
Dimensions (W x D x H)	10.79 x 8.5 x 4.49 in
Net Weight	6.61 lb
Additional Features
Display Technology	DLP
Focal Length	7.51 mm
Screen Size	30 – 300 in
Native Offset	116% +/-5%
Connections	2 x HDMI 2.0, VGA in, 2 USB-A, audio in/out, RJ-45, 12V trigger, 3D sync, RS-232
Operating Conditions	0 to 40°C, up to 80% humidity
Dust Protection	IP6X
General
Brand	Optoma
Model	ZH451ST

Specifications are verified against the Optoma manufacturer data sheet (October 2026) and may change without notice. Confirm critical requirements with Optoma before ordering.

What’s in the Box

• AC power cord
• Remote control
• AAA batteries
• Quick start guide

Warranty & Support

Planning a multi-room or multi-site install? Request a quote from Robertson AV for 5 or more units, or call us at 800-919-6548 or email orders@robertsonav.com. Free ground shipping on U.S. orders. Schools, businesses, government agencies and houses of worship: ask us about project and quantity pricing.