Optoma 4K400STx Education Projector with 4,000 ANSI Lumens and 4K UHD Resolution
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- 3840 × 2160 Resolution · 4K UHD
- 4,000 Light output
- 1,000,000:1 Contrast
- 16:9 Aspect ratio
- DLP Projector type
Questions about the product?
Whether it's a conference room, school or home cinema – Florian Langkamp, our Projectors and tenders specialist, will advise you personally and prepare an individual quote for you.
Conference room, school or home cinema: we give you personal advice and put together a tailored quote.
Florian LangkampProjectors and tendersspecialist
Description

Optoma 4K400STx Education Projector
- 1000,000:1Contrast
- 0.5:1Throw ratio
- 40–330 cmThrow distance
- 4K UHDResolution · 3840 × 2160
Bright True 4K UHD Short-Throw Projector for Classrooms and Conference Rooms
Discover the short-throw version of the 4K400x when you need a large image in a smaller room.
Future-proof your classroom or meeting room with this bright True 4K UHD short-throw projector. The 4K400STx delivers rich images in any environment, even when complete control of ambient light is not possible.
This projector features two HDMI ports, audio ports, USB for powering 5V devices, a 12V trigger, and an RS232 interface for integration into your existing control solution.
Experience the following highlights:
- True 4K UHD resolution
- 100-inch large image from just over one meter away
- 4000 lumens for bright images in any environment
- Extensive connectivity options
True 4K UHD resolution
HDR and HLG compatible
Short-throw projection
100-inch large image from just over one meter away
Bright images even in daylight
4000 lumens for bright images in any environment
Extensive connectivity options
Two HDMI ports, audio ports, USB power, 12V trigger, and RS232
Short-throw projection
This projector can project large images from a short distance, meaning you can achieve an image up to 100 inches from just under one meter away.
True 4K UHD resolution
The Ultra HD 4K resolution delivers sharper, lifelike images and richer colors - so you can sit closer to the screen and enjoy an even more immersive experience.
Our DLP projectors offer the CTA (Consumer Technology Association) approved True 4K UHD resolution and can project 8.3 million pixels onto the screen. That is four times more detail than Full HD and twice as many as competing technologies that only deliver 4.1 million pixels.
HDR and HLG compatible
Supports both HDR10 and Hybrid Log Gamma (HLG) HDR content. With this Optoma projector, you can see much more detail and texture. Objects look more solid and lifelike, and the additional details create a greater sense of depth.
Lights, camera, action!
This versatile projector combines high brightness and vivid colors for lifelike images in any environment. Make a lasting impression with larger and more powerful presentations at any time of day.
Dual HDMI inputs
Play games, stream videos, and share photos on the big screen comfortably at home. Thanks to the dual HDMI inputs, you can easily connect your game console, set-top box, laptop, PC, Blu-ray player, or media streamer with a single cable. By connecting an HDMI dongle such as Google Chromecast™, Amazon Fire TV, Apple TV™, or Roku® Stick, you can even turn the device into a smart projector.
Amazing Colour
Optoma projectors deliver reliable color performance for any content and any environment. From accurate sRGB colors to razor-sharp presentations - we have the display mode that suits your needs.
ISF Modes
This feature allows you to save the day and night modes calibrated by an ISF technician.
Built-in speaker
Complete your home theater experience with the convenient built-in speaker. It delivers great sound, and you save the time and effort of additional speakers.
USB Power
Use USB power to supply power to an HDMI dongle, such as Google Chromecast.
Horizontal Keystone Correction and Four Corner Adjustment
Whether horizontal, vertical keystone correction, or Four Corner Adjustment for even images - this projector can do both. It is therefore also suitable for unusual placements with uneven walls or similar.
Illuminated remote control
Our backlit remote controls are equipped with subtle white LEDs so that the buttons are clearly visible and easy to operate even in the dark.
Technical data
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General
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Condition
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Manufacturer
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Brand
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Model name
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Manufacturer part number
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EAN
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Product type
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ApplicationEducation Projector, Business Projector, Short-Throw Projector
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FeaturesBuilt-in speaker
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Image
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Projector type
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Resolution
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Aspect ratio
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ANSI lumens
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Contrast ratio
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Light source
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Light source
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Lamp life
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Lamp life (Eco)
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Projection and lens
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Projection distanceShort distance
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Throw ratio0.5 : 1
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Throw distance0.4 to 3.3 m
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Lens included in deliveryYes
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Keystone correction horizontal
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Keystone correction vertical
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Connections and wireless
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Inputs1x 3.5mm jack, 1x RS232, 1x USB-A, 2x HDMI
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Outputs1x 3.5mm jack
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Wireless technologyn/a
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Energy and noise
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Operating noise
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Operating noise (Eco)
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Power consumption in operation
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Dimensions and weight
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Dimensions (W × H × D)31.5 × 11.8 × 27 cm
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Weight
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Colour
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Scope of delivery and warranty
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Scope of deliveryBatteries, Power cable, Remote control
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Warranty
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Warranty type
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WEEE number
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Documents & downloads
Throw distance calculator – Optimal setup for Optoma 4K400STx Education Projector
Optimal setup for Optoma 4K400STx Education Projector
More settings
Aspect ratio
Borderlinebelow 500 lm/m²
Darkened roomfrom 500 lm/m²
Room with ambient lightfrom 1,000 lm/m²
Bright roomfrom 1,500 lm/m²
Borderline: at this image size the picture looks flat and low in contrast even in a darkened room – better to choose a smaller image.
Reviews
Product safety information
Manufacturer
Optoma
EU responsible person
Optoma Deutschland GmbHAm Nordpark 3
41069 Mönchengladbach
Germany
Contact
E-Mail: info@optoma.de












