Optoma ZK420UST 4K UHD Ultra Short Throw Laser Projector, 4200 ANSI Lumens, DLP, White
£3,405.11
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About This Item
- UHD 4K native resolution with 3840×2160 pixel count
- 4200 ANSI lumens brightness powered by long-life laser light source
- Ultra short throw design supporting 100 to 150 inch screen sizes
- Dual HDMI 2.0 ports alongside HDBaseT and Ethernet LAN connectivity
- Integrated 15W speakers with eARC and 3D sync port support
- White colour finish with 34 dB noise level and Kensington cable lock slot
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Optoma ZK420UST – High brightness laser projection
We recommend the Optoma ZK420UST ultra short throw projector 4K UHD 4200 ANSI lumens Laser DLP 100-150″ White for businesses needing large screens. Its laser light source delivers 4200 ANSI lumens for clear images even in lit rooms. This model projects up to 150 inches from just under a metre away.
Why the Optoma ZK420UST ultra short throw projector 4K UHD 4200 ANSI lumens Laser DLP 100-150″ White stands out
The 30000 hour light source reduces maintenance needs significantly. You avoid frequent bulb replacements during long installations. Also, DLP technology ensures stable colour performance over time.
Core metrics at a glance
| Metric | Spec. |
|---|---|
| Brightness | 4200 ANSI lumens |
| Resolution | UHD 4K (3840×2160) |
| Light Life | 30000 hours |
| Noise | 34 dB |
| Weight | 4.5 kg |
Space saving ultra short throw capability
Position this unit close to the wall for large images. It sits only 0.6 to 0.9 metres from the screen. This setup prevents shadows from obstructing the picture during use.
Reliable laser brightness for daily use
You get consistent 4200 ANSI lumens output for various environments. The laser source maintains brightness levels without rapid degradation. It supports hybrid Log-Gamma for improved HDR content display.
Flexible connectivity for business systems
We include two HDMI 2.0 ports for multiple device inputs. An HDBaseT port extends video signals over long cable runs. Ethernet LAN ports help integrate the projector into network systems.
Quiet operation in shared spaces
The fan noise remains low at 34 dB during standard use. You can switch to economic mode for 29 dB noise levels. This makes it suitable for meeting rooms and classrooms.
In the box
- Projector unit
- Remote control
Before you order
- Confirm your screen size fits the 100 to 150 inch range.
- Check that your room allows for a 0.6 to 0.9 metre throw distance.
- Verify your existing HDMI cables support 4K resolution.
Frequently Asked Questions
Q: What is the native resolution?
A: The native resolution is UHD 4K at 3840×2160 pixels.
Q: Does it support 3D content?
A: Yes, this model supports 3D playback with a sync port.
Q: How loud is the projector?
A: It operates at 34 dB, dropping to 29 dB in economic mode.
Q: Is an ethernet port included?
A: Yes, it features one RJ-45 ethernet LAN port.
Our verdict
This unit suits commercial spaces needing large, bright displays without ceiling mounts. The laser technology offers longevity while the ultra short throw saves floor space.
| Projector | |
|---|---|
| Projector native resolution | UHD 4K (3840x2160) |
| Native aspect ratio | 16:9 |
| Supported aspect ratios | 4:3, 16:9 |
| Screen size compatibility | 2540 - 3810 mm (100 - 150") |
| Projection distance | 0.614 - 0.894 m |
| Contrast ratio (typical) | 1800:1 |
| Vertical scan range | 24 - 240 Hz |
| Horizontal scan range | 15 - 140 kHz |
| Projection technology | DLP |
| Projector brightness | 4200 ANSI lumens |
| Zoom type | Fixed |
| Lamps | |
| Light source type | Laser |
| Service life of light source | 30000 h |
| Light source | |
| Light source type | Laser |
| Service life of light source | 30000 h |
| Lens system | |
| Throw ratio | 0.25:1 |
| Offset | 120% |
| Zoom type | Fixed |
| Scanning frequency | |
| Vertical scan range | 24 - 240 Hz |
| Horizontal scan range | 15 - 140 kHz |
| Video | |
| Full HD | Yes |
| 3D | Yes |
| Audio | |
| Built-in speaker(s) | Yes |
| Number of built-in speakers | 1 |
| RMS rated power | 15 W |
| Ports & interfaces | |
| HDBaseT port | Yes |
| DC-in jack | Yes |
| HDMI version | 2.0 |
| HDMI ports quantity | 2 |
| Ethernet LAN (RJ-45) ports | 1 |
| Serial interface type | RJ-45, RS-232 |
| PC Audio out | Yes |
| 3D sync port | Yes |
| Service port type | USB Type-A |
| Enhanced Audio Return Channel (eARC) | Yes |
| Network | |
| Ethernet LAN | Yes |
| Ethernet LAN (RJ-45) ports | 1 |
| Sound emission | |
| Noise level | 34 dB |
| Noise level (economic mode) | 29 dB |
| Technical details | |
| DC-in jack | Yes |
| Product colour | White |
| On Screen Display (OSD) | Yes |
| On Screen Display (OSD) languages | Arabic, Simplified Chinese, Traditional Chinese, Czech, Danish, German, Dutch, English, Spanish, Farsi, Finnish, French, Greek, Hungarian, Indonesian, Italian, Japanese, Norwegian, Polish, Portuguese, Romanian, Russian, Swedish, Turkish, Vietnamese |
| Performance | |
| Market positioning | Business |
| On Screen Display (OSD) | Yes |
| On Screen Display (OSD) languages | Arabic, Simplified Chinese, Traditional Chinese, Czech, Danish, German, Dutch, English, Spanish, Farsi, Finnish, French, Greek, Hungarian, Indonesian, Italian, Japanese, Norwegian, Polish, Portuguese, Romanian, Russian, Swedish, Turkish, Vietnamese |
| Vertical scan range | 24 - 240 Hz |
| Horizontal scan range | 15 - 140 kHz |
| Noise level | 34 dB |
| Noise level (economic mode) | 29 dB |
| Number of OSD languages | 25 |
| Features | |
| On Screen Display (OSD) | Yes |
| On Screen Display (OSD) languages | Arabic, Simplified Chinese, Traditional Chinese, Czech, Danish, German, Dutch, English, Spanish, Farsi, Finnish, French, Greek, Hungarian, Indonesian, Italian, Japanese, Norwegian, Polish, Portuguese, Romanian, Russian, Swedish, Turkish, Vietnamese |
| Noise level | 34 dB |
| Noise level (economic mode) | 29 dB |
| High Dynamic Range (HDR) technology | Hybrid Log-Gamma (HLG) |
| High Dynamic Range (HDR) supported | Yes |
| Number of OSD languages | 25 |
| International Protection (IP) code | IP6X |
| Multimedia | |
| Built-in speaker(s) | Yes |
| Number of built-in speakers | 1 |
| RMS rated power | 15 W |
| Design | |
| Market positioning | Business |
| Product type | Ultra short throw projector |
| Cable lock slot type | Kensington |
| Product colour | White |
| Cable lock slot | Yes |
| Power | |
| Power source | AC |
| Power consumption (typical) | 250 W |
| Security | |
| Cable lock slot type | Kensington |
| Cable lock slot | Yes |
| Operational conditions | |
| Operating relative humidity (H-H) | 0 - 80% |
| Storage relative humidity (H-H) | 0 - 90% |
| Operating temperature (T-T) | 0 - 40 °C |
| Operating altitude | 0 - 3048 m |
| Weight & dimensions | |
| Weight | 4.5 kg |
| Width | 327 mm |
| Depth | 327.8 mm |
| Height | 85 mm |
| Packaging content | |
| Remote control included | Yes |
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