Optoma ZH451ST

Brand	Optoma
Type	Business
Released	April 2026
Resolution	1080p
HDR formats	HDR10, HLG
Imaging technology	DLP
Light source type	Laser (phosphor)
ISO light output	4,200 lm
Throw ratio	0.5:1
Input lag (rated)	1920×1080 @ 60 Hz: 16.7 ms · 1920×1080 @ 120 Hz: 8.4 ms · 3840×2160 @ 60 Hz: 16.7 ms

A compact Full HD 1080p single-chip DLP laser projector with a fixed short-throw lens (0.496:1) rated at 4,200 ISO lumens and sold for golf simulators and corporate rooms. It has DuraCore laser life rated at 30,000 hours, 360-degree and portrait mounting, an IP6X-rated optical engine, an external power supply, two HDMI 2.0 inputs, RJ45, RS232 and 12V trigger control, and DLP-Link 3D.

Data sheet

Picture

Imaging technology	DLP
Technology brand	DLP
Native aspect ratio	16:9
Native resolution	1920 × 1080
Dynamic contrast	2,000,000:1
Gamma / EOTF presets	2.2, 2.4
Bit depth / 'number of colours'	10 bit
Filmmaker Mode	Yes
Colour management system	6-axis
ISF certified	Yes
HDR formats	HDR10, HLG
Input lag (rated)	1920×1080 @ 60 Hz: 16.7 ms · 1920×1080 @ 120 Hz: 8.4 ms · 3840×2160 @ 60 Hz: 16.7 ms
3D support	Yes
3D sync method	DLP-Link
3D formats	Side-by-side, Top-bottom, Frame sequential

Optics

Throw ratio	0.5:1
Projection distance table	30″: 0.33 m · 40″: 0.44 m · 50″: 0.55 m · 60″: 0.66 m · 70″: 0.77–0.77 m · 80″: 0.88 m · 90″: 0.99 m · 100″: 1.1–1.1 m · 120″: 1.32 m · 150″: 1.65 m · 180″: 1.98 m · 200″: 2.2 m · 250″: 2.75 m · 300″: 3.3 m
Zoom type	None
Zoom ratio	1×
Focus	Manual
Fixed offset	116%
Focal length	7.51 mm
F-number	2.8
Image size range	30–300 in
Vertical keystone	-15–15°
Horizontal keystone	-15–15°
Corner / warp correction	4pt

Light source

Light source type	Laser (phosphor)
Light source detail	Laser (Optoma DuraCore)
Light source life	Normal: 30,000 h
Constant brightness mode	Yes
Cool-down time	90 s
Light-source dimming	Manual steps
ISO light output	4,200 lm ISO 21118	ISO 21118
Brightness uniformity (centre-to-corner)	75%

Audio

Speaker power	15 W
Speaker count	1
Audio channels	Mono

Inputs, control & connectivity

Max input signal	3840 × 2160
HDMI port count	2
HDMI ports (feature-level)	HDMI 1: HDMI 2.0; HDMI 2: HDMI 2.0
Horizontal scan frequency	15–135 kHz
Vertical scan frequency	24–120 Hz
VGA input	Yes
RS-232	Yes
LAN control	Yes
Wired IR input	Yes
12 V trigger	Yes
PJLink class	Class 1
Control ecosystem drivers	Crestron
Ethernet	Yes

Environment & power

Operating temperature	0–40°C
Altitude / high-altitude mode	2,500 m
High-altitude mode	Yes
Operating orientations	Portrait, 360°
Rated voltage	100–240 V
Rated frequency	50–60 Hz
Power consumption (max)	170 W
Standby power	0.5 W
Power supply	External brick
Fan noise (sound pressure)	Min: 29 dB(A) · Max: 36 dB(A)

Physical & installation

Width	274 mm
Depth	216 mm
Height	114 mm
Weight	3 kg
Ingress protection	IP6X
Mount hole pattern	Thread: M4 · Screw length mm: 10

Support & ownership

User manual	https://region-resource.optoma.com/products/documents/0NL94Q0vvVEJVe7dxQKlMzhtuURlT8FwUXNkLi8y.pdf
Photobiological risk group	RG2
Hazard distance	1 m
Laser product class	Class 1
Safety & market certifications	FCC

In the box

Box contents	Power cord, Remote, Batteries, Quick start guide
Remote type	IR

Tools

Throw calculator — How far from the screen the ZH451ST needs to sit for a given image size, set to its 0.496:1 lens.
Download spec as CSV — Every value on this data sheet with its unit and source, one row per spec.
Download spec as JSON — The same data from the open data API, with variants and identifiers.