ViewSonic LS901-4K

MSRP$3,699

Brand	ViewSonic · Luminous Superior
Type	Installation
Released	February 2025
Resolution	4K UHD
HDR formats	HDR10, HLG
Imaging technology	DLP
Light source type	Laser (phosphor)
ANSI lumens	5,500 lm
Throw ratio	1.2–2.04:1

A laser-phosphor DLP installation projector from ViewSonic's Luminous Superior line, rated at 5,500 ANSI lumens with a 3840x2160 output from a 0.65-inch DMD. It has a 1.7x optical zoom, a downward vertical lens shift, two HDMI 2.0 inputs, RS-232 and LAN control for Crestron and similar systems, and built-in 15 W x 2 speakers.

Data sheet

Picture

Imaging technology	DLP
Technology brand	DLP
Number of imaging devices	1
Chip / panel diagonal	0.65 in
Native aspect ratio	16:9
Addressable resolution	3840 × 2160
Dynamic contrast	3,000,000:1
Dynamic light control	Laser dimming
Bit depth / 'number of colours'	30 bit
HDR formats	HDR10, HLG
Max refresh rate	1920×1080: 240 Hz · 2560×1440: 120 Hz · 3840×2160: 60 Hz
3D support	Yes
3D sync method	DLP-Link
3D formats	Side-by-side, Top-bottom, Frame sequential

Optics

Throw ratio	1.2–2.04:1
Projection distance table	30″: 0.8–1.36 m · 40″: 1.06–1.81 m · 50″: 1.33–2.26 m · 60″: 1.59–2.71 m · 70″: 1.86–3.16 m · 80″: 2.13–3.61 m · 90″: 2.39–4.07 m · 100″: 2.66–4.52 m · 110″: 2.92–4.97 m · 120″: 3.19–5.42 m · 130″: 3.45–5.87 m · 140″: 3.72–6.32 m · 150″: 3.99–6.77 m · 200″: 5.31–9.03 m · 250″: 6.64–11.29 m · 300″: 7.97–13.55 m
Zoom type	Optical
Zoom ratio	1.7×
Focus	Manual
Vertical lens shift	-21–0%
Fixed offset	154%
Focal length	17.63–27.9 mm
F-number	2.3–3
Image size range	30–300 in
Vertical keystone	-30–30°
Horizontal keystone	-30–30°
Corner / warp correction	Warp

Light source

Light source type	Laser (phosphor)
Light source life	Normal: 20,000 h · Super eco: 30,000 h
Light-source dimming	Dynamic frame
ANSI lumens	5,500 lm ANSI	ANSI
Claimed brightness (non-standard)	6,000
Claimed brightness unit	Unspecified

Audio

Speaker power	30 W
Speaker count	2
Audio outputs	3.5 mm

Inputs, control & connectivity

Max input signal	3840 × 2160
HDMI port count	2
HDMI ports (feature-level)	HDMI 1: HDMI 2.0, HDCP 2.3; HDMI 2: HDMI 2.0, HDCP 2.3
Horizontal scan frequency	15–255 kHz
Vertical scan frequency	23–240 Hz
USB media playback	No
RS-232	Yes
LAN control	Yes
Control ecosystem drivers	Crestron
Ethernet	Yes

Environment & power

Operating temperature	0–40°C
Operating humidity	10–80%RH
Altitude / high-altitude mode	3,658 m
High-altitude mode	Yes
Operating orientations	Table, Ceiling, Rear
Rated voltage	100–240 V
Rated frequency	50–60 Hz
Power consumption by mode	Normal: 245 W
Standby power	0.5 W
Fan noise (sound pressure)	Normal: 31 dB(A) · Eco: 25 dB(A)

Physical & installation

Width	337 mm
Depth	280 mm
Height	132 mm
Weight	4.85 kg
Colours / finishes	White
Sealed optical engine	Yes
Air filter	None

Support & ownership

Warranty	🇺🇸 US 3 yr
User manual	https://www.viewsonicglobal.com/public/products_download/user_guide/projector/LS901HD_LS901-4K/LS901HD_LS901-4K_UG_ENG.pdf
Photobiological risk group	RG2
Hazard distance	1 m
Laser product class	Class 1
Safety & market certifications	CE, FCC

In the box

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

Tools

Throw calculator — How far from the screen the LS901-4K needs to sit for a given image size, set to its 1.2–2.04:1 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.