Optoma ZK430ST 4K UHD Short Throw Laser Projector
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Optoma ZK430ST — 4K UHD Short Throw Laser Projector
Imagine transforming any room into a cinematic experience without the clutter of long cable runs or ceiling mounts. The Optoma ZK430ST is a professional-grade 4K UHD short throw laser projector that delivers a breathtaking 300" image from just 4.97 metres — making it the ideal centrepiece for home theatres, boardrooms, and large venue installations alike. With a laser light source rated at 20,000 hours, you get years of maintenance-free, brilliantly sharp projection with zero lamp replacements.
Powered by DLP technology and driven by 4,000 lumens of laser brightness, the ZK430ST cuts through ambient light with ease. HDR10 and HLG support ensure every frame is rendered with stunning contrast and colour depth, while the 240Hz refresh rate and ultra-low input lag make it equally capable as a large-format gaming display.
Key Highlights
- True 4K UHD (3840 × 2160) resolution via single-chip DLP®
- 4,000 ANSI lumens — vivid even in brightly lit environments
- Short throw ratio: 0.498:1 — 100" image from just 1.65 m
- Laser light source: up to 20,000 hours maintenance-free
- HDR10 & HLG support for rich, accurate colour
- Up to 240Hz refresh rate with ultra-low input lag for gaming
- Full 3D compatibility (DLP-Link)
- Flexible connectivity: 2× HDMI 2.0 (HDCP 2.2), USB-A, RS232, RJ45, 12V trigger
- Built-in 10W speaker
- Vertical lens shift and ±30° keystone correction
- Compact and installation-ready: 430 × 310 × 130 mm, 5.5 kg
Full Technical Specifications
| Specification | Detail |
|---|---|
| Model | ZK430ST |
| Display Technology | Single-chip DLP® |
| Native Resolution | 4K UHD (3840 × 2160) |
| Brightness | 4,000 ANSI Lumens |
| Contrast Ratio | 2,000,000:1 |
| Light Source Type | Laser |
| Light Source Life | Up to 20,000 hours (Normal); Up to 30,000 hours (Eco) |
| Throw Ratio | 0.498:1 |
| Image Size | 30" – 300" |
| Projection Distance (100") | 1.65 m |
| Projection Distance (300") | 4.97 m |
| Aspect Ratio | 16:9 (Native) |
| HDR Support | HDR10, HLG |
| 3D Support | Yes (DLP-Link) |
| Refresh Rate | Up to 240Hz |
| Input Lag | 4ms (1080p/240Hz); 8ms (4K/60Hz) |
| Keystone Correction | Vertical ±30°, Horizontal ±30° |
| Lens Shift | Vertical: Yes |
| Zoom | Fixed |
| HDMI Inputs | 2 × HDMI 2.0 (HDCP 2.2) |
| USB | 1 × USB-A (5V / 1.5A power) |
| Audio Output | 1 × 3.5mm Audio Out |
| Built-in Speaker | 10W Mono |
| RS232 | Yes (DB-9) |
| RJ45 (LAN Control) | Yes |
| 12V Trigger | Yes |
| Noise Level | 30 dB (Normal) / 26 dB (Eco) |
| Power Consumption | 385W (Normal) / 295W (Eco) |
| Standby Power | < 0.5W |
| Operating Temperature | 0°C – 40°C |
| Storage Temperature | -20°C – 60°C |
| Dimensions (W × D × H) | 430 × 310 × 130 mm |
| Weight | 5.5 kg |
| Colour | White |
| Certifications | CE, FCC, RoHS |
| Warranty | 3 Years (Projector) / 1 Year (Light Source) |
Caring for your Speakers and Amplifiers
To Keep your equipment safe these are some best practices to note. Please be advised that this is only to reduce the risk of misuse and is not an exhaustive list.
Speakers
- Speaker terminals are marked red and black, ensure your amplifier to the speakers are wired on the same colours
- Ensure no loose speaker wire from the red touches a loose wire from the black as this will lead to a short circuit and damage either the speaker, the amplifier or both.
- Not all speakers are designed to play at max volume, kindly consider the pairing of your amplifier and speakers
- Speaker cabinets cannot be replaced please handle with care.
AV & Stereo Amplifiers
- If your amplifier has HDMI ports, ensure all devices are off before plugging in the HDMI cable
- Turn off the amplifier before swoping out or adding speaker cable
- Amplifiers generate heat, place them in a well ventilated space. if possible avoid having anything on top of the unit.
- adding a surge protector can assist with power dips which are likely to damage your devices. Isotek and Furman are industry standard.
- Dusty environments can sometimes lead to accumulation of dust in the electronic components that might affect heat regulation
Shipping & Returns
- Free shipping on orders over R500 within the country.
- Standard delivery within 2–5 business days. Delays will be communicated. This might vary slightly depending on your location.
- Return items in original condition for a full refund. (unopened state)
- Returns that are open/unboxed will be subject to a handling fee. Refunds will only be processed after testing the unit.