Optoma EH401 Full HD 1080p Projector – 4000 Lumens, 4K HDR Input, LAN Control for Business and Home

The Optoma EH401 is a 4,000-lumen Full HD DLP projector for meeting rooms, classrooms, and multipurpose home use. It accepts 4K HDR sources through HDMI 2.0, adds LAN control for managed environments, and weighs 6.4 lbs, so it works equally well ceiling-mounted or carried between rooms.

Deep-Dive Story & Problem/Solution

Dim Projectors Force Meetings Into the Dark

When a projector cannot compete with room lighting, someone turns the lights off. Attendees can no longer take notes or see each other, and attention drops. Many older office projectors at 2,500 to 3,000 lumens create exactly this situation.

The EH401 outputs 4,000 lumens from a 240W lamp and 0.47-inch DLP chip, with a 22,000:1 contrast ratio that keeps black text crisp on white slides. Full HD resolution provides more than twice the pixels of XGA, so dense tables remain readable from the back row.

Its two HDMI inputs include an HDMI 2.0 port that accepts 4K and HDR signals, and the RJ-45 port lets a facilities team check lamp hours or shut the unit down remotely.

Bright 1080p for Everyday Presentations

Slides, video calls, and training videos stay clear at image sizes from about 29 to 301 inches. Full HD 3D is supported for specialist teaching and visualisation content.

Light to Carry, Easy to Manage

The 1.50–1.66:1 lens fills a 100-inch screen from roughly 11 to 12 feet. Lamp life reaches 15,000 hours in Eco mode, fan noise is 29dB (27dB Eco), and the filter-free DLP engine keeps servicing minimal.

Setup Instructions

How to Set Up the Optoma EH401

1. Position the projector 11 to 12 feet from a 100-inch screen on a table or ceiling mount.
2. Connect a laptop or media player by HDMI, and plug in Ethernet for network control.
3. Use zoom, focus, and vertical keystone to square and sharpen the picture.
4. Choose Presentation mode for lit rooms and enable Eco lamp mode when full brightness is unnecessary.