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White compact DLP projector with short-throw lens, front-facing RJ45 and HDMI ports visible

OPTOMA

OPTOMA ZH451ST 4200 lm 1080p short-throw laser business projector

SKU CH-EM1S-1EEAF MPN ZH451ST

Projects a 100-inch image from just over three feet away with 4,200 lumens, 1080p resolution, a 30,000-hour laser engine and IP6X dust resistance

  • Screen diagonal36 in to 300 in
  • Panel typeDLP®
  • Image brightness4,200 Lumens
  • Power draw170 W
  • Panel resolution1920 × 1080
  • Highest resolution1920 × 1080
  • Projects 100-inch image from just over 3 feet away with 0.496:1 short-throw lens
  • 4,200 lumens brightness and 1080p resolution cut through ambient light in bright rooms
  • 30,000-hour DuraCore laser engine delivers virtually maintenance-free, mercury-free operation
  • IP6X dust-resistant sealed optical engine protects color quality and long-term reliability
  • 4ms input lag at 1080p/120Hz provides responsive simulation and gaming performance

Compact short-throw laser projector

The Optoma ZH451ST is a DuraCore laser projector built for Full HD 1080p presentation in tight spaces. Its 0.496:1 lens throws a 100-inch image from just over three feet away, making it practical for golf simulators, classrooms and boardrooms where ambient light is strong. The sealed IP6X optical engine resists dust to protect long-term colour accuracy.

DuraCore laser engine and 360° mounting

The laser light source delivers 4,200 lumens measured to ISO 21118 and runs for up to 30,000 hours without lamp changes. An external power supply reduces internal heat, while the chassis uses up to 50% post-consumer recycled plastics and packaging reaches 97% recyclable content. The unit supports 360-degree and portrait orientation for floor or ceiling installations.

Low-lag gaming mode and simple connectivity

Enhanced gaming mode cuts input lag to 8.4 ms at 1080p 120 Hz for responsive simulator play. Video inputs include HDMI and D-Sub, with RJ45 for network control and USB for service. A built-in speaker handles basic audio, while RS232 allows integration with room automation. Buyers needing wireless casting or lens-shift adjustment should look elsewhere.

How it compares

Measured against everything we stock in Presentation Projectors, at today’s prices. Recalculated every night.

Price $2,090.99
Pricier than about 90% of the 608 comparable items (median $157.99).
Screen diagonal 36 in to 300 in
Lower than about 74% of the 141 comparable items (median 110 in).

Specifications

Product
Brand nameOptoma
Product lineDuraCore laser projector
Model nameZH451ST
Part numberZH451ST
Case colorWhite
Product typeDLP
Display
Screen diagonal36 in to 300 in
Panel typeDLP®
Image brightness4,200 Lumens
Panel resolution1920 × 1080
Highest resolution1920 × 1080
Screen ratio16:9
Contrast300,000:1
Horizontal scan rate15 to 135 Hz
Colors displayed1.073 Million Colors
Projection setup360° operation
Audio & video
Integrated speakers1 × 15 W
Connectivity
Network connectionRJ45
Ports & slots
Video input typesAnalog RGB, Digital, Component
Video inputsHDMI, D-Sub
USB portsYes
Power
Power draw170 W
Power supply100–240 V, 50-60 Hz
Size & build
Product dimensions10.79 in × 8.5 in × 4.49 in
Shipping weight4.42 kg
Package size404 × 284 × 157 mm
Environment & compliance
Humidity limitsMax. Humidity 80% (non-condensation)
More details
Team affiliationNO

Questions about this item

How long does the DuraCore laser engine last before it needs replacement?

The laser engine is rated for up to 30,000 hours of virtually maintenance-free operation, so it will not need replacement for years of daily use.

What limits continuous operation first — brightness drop or heat?

The IP6X sealed optical engine resists dust to protect long-term brightness, and 360-degree mounting allows flexible airflow for sustained use.

How loud is the fan and how much power does it draw when running all day?

The external power supply improves energy efficiency and the compact chassis reduces heat, keeping noise and power draw low during extended sessions.

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