BenQ LK835ST Short Throw DLP 4K UHD 4000 ANSI lm Laser Projector, Black
Key Specifications
Choose one or multiple features to search for items that have the same specifications.| Ports & interfaces | |
| Serial interface type | RS-232 |
| USB connector type | USB Type-A, USB Type-C |
| DC-in jack | ![]() |
| DVI port | ![]() |
| VGA (D-Sub) ports quantity | 0 |
| Composite video in | 0 |
| Component video (YPbPr/YCbCr) in | 0 |
| AC (power) in | ![]() |
| HDMI ports quantity | 2 |
| AUX in | ![]() |
| HDMI version | 1.4a |
| DisplayPorts quantity | 1 |
| PC Audio out | ![]() |
| 12V trigger | ![]() |
| Lens system | |
| Optical zoom | 1.2x |
| Zoom capability | ![]() |
| Focus | Motorized |
| Offset | 102.5% |
| Throw ratio | 0.69~0.83 |
| Zoom type | Motorized |
| Weight & dimensions | |
| Weight | 3.4 kg |
| Height | 234.5 mm |
| Width | 303.5 mm |
| Depth | 112.4 mm |
| Energy management | |
| Power consumption (typical) | 212 W |
| Power source | AC |
| Power consumption (standby) | 0.5 W |
| Auto power off | ![]() |
| Power consumption (economy mode) | 136 W |
| AC input voltage | 100 - 240 V |
| Power consumption (max) | 320 W |
| Operational conditions | |
| Operating temperature (T-T) | 0 - 40 °C |
| Networking | |
| Wi-Fi standards | 802.11ac |
| Ethernet LAN | ![]() |
| Bluetooth | ![]() |
| Wi-Fi | ![]() |
| Miracast | ![]() |
| Projector | |
| Contrast ratio (typical) | 3000000:1 |
| Projection distance | 1.5 - 3.0 m |
| Projection technology | DLP |
| Projector brightness | 4000 ANSI lumens |
| Screen size compatibility | 1524 - 3048 mm (60 - 120") |
| Keystone correction, vertical | -30 - 30° |
| Keystone correction, horizontal | -30 - 30° |
| Contrast ratio (dynamic) | 3000000:1 |
| Projector brightness (economic mode) | 3000 ANSI lumens |
| Native aspect ratio | 16:9 |
| Supported aspect ratios | 16:9 |
| Projector native resolution | 4K (4096x2400) |
| Colour light output | 4000 ANSI lumens |
| White light output | 4000 ANSI lumens |
| Number of colours | 1.07 billion colours |
| Smart projector | ![]() |
| Video | |
| Full HD | ![]() |
| Supported graphics resolutions | 640 x 480 (VGA), 3840 x 2160 |
| Supported video modes | 480i, 480p, 576i, 576p, 720p, 1080i, 1080p, 2160p |
| 3D | ![]() |
| Storage | |
| Card reader integrated | ![]() |
| Lamps | |
| Service life of lamp | 20000 h |
| Service life of lamp (economic mode) | 30000 h |
| Packaging content | |
| AC adapter included | ![]() |
| Remote control included | ![]() |
| Cables included | AC |
| Carrying case | ![]() |
| Batteries included | ![]() |
| Mounting brackets included | ![]() |
| Other features | |
| Maximum digital resolution | 3840 x 2160 pixels |
| Design | |
| Cable lock slot | ![]() |
| Product colour | Black |
| Ceiling mounting supported | ![]() |
| Market positioning | Business, Education, Home Entertainment |
| Product type | Short throw projector |
| Cable lock slot type | Kensington |
| Features | |
| Noise level | 34 dB |
| On Screen Display (OSD) | ![]() |
| HDCP | ![]() |
| Noise level (economic mode) | 28 dB |
| Preset modes | Dynamic, Cinema |
| Projection modes | Front |
| High Dynamic Range (HDR) supported | ![]() |
| Multimedia | |
| Number of built-in speakers | 1 |
| RMS rated power | 10 W |
| Built-in speaker(s) | ![]() |
| Video formats supported | 4K UHD |
| Light source | |
| Light source type | Laser |
| Service life of light source (economic mode) | 30000 h |
| Service life of light source | 20000 h |
| EAN | 4718755095436 |
| Warranty | 3 years |
The BenQ LK835ST is a short-throw projector that utilizes DLP projection technology. It delivers a native 4K resolution of 4096x2400 pixels for detailed image reproduction. With a brightness rating of 4000 ANSI lumens, the projector is suitable for use in rooms with some ambient light. The unit's dynamic contrast ratio is specified at 3,000,000:1, which provides differentiation between light and dark areas of the displayed image.
This model is equipped with a laser light source, providing a service life of up to 20,000 hours in its standard operating mode. Its short-throw ratio of 0.69 to 0.83 allows for the projection of a large screen size from a minimal distance, making it practical for smaller rooms or installations. Image alignment is managed through a motorized zoom and focus system for precise adjustments. Additionally, horizontal and vertical keystone correction of ±30 degrees is available to correct image geometry when the projector is placed off-axis.
For connectivity, the projector includes two HDMI 2.0b inputs and supports 802.11ac Wi-Fi. An integrated 10-watt speaker provides audio output for presentations or basic media playback. The physical design supports placement on a table or mounting to a ceiling for permanent installations. A remote control is included for managing projector settings and functions from a distance.
Key Features:- Native 4K (4096x2400) resolution
- 4000 ANSI lumens brightness
- DLP projection technology
- Laser light source with a 20,000-hour service life
- Short-throw ratio of 0.69 - 0.83
- 3,000,000:1 dynamic contrast ratio
- Motorized zoom and focus for precise adjustment
- Equipped with two HDMI 2.0b ports
- Integrated 10 W speaker
- Supports table and ceiling placement
Estimated delivery: 02.04 - 05.04
Today: 10:00 - 18:00
Estimated delivery: 02.04 - 05.04
Today: 09:00 - 17:00
Estimated delivery: 02.04 - 05.04
Today: 10:00 - 17:00
Estimated delivery: 02.04 - 05.04
Today: 10:00 - 18:00
Estimated delivery: 02.04 - 05.04
Today: 10:00 - 17:00
Estimated delivery time: 02.04 - 05.04
Estimated delivery time: 02.04 - 04.04
Estimated delivery time: 03.04 - 05.04
Estimated delivery time: 03.04 - 05.04
Estimated delivery time: 03.04 - 04.04
Estimated delivery time: 02.04 - 05.04
Estimated delivery time: 02.04 - 05.04
Estimated delivery time: 03.04 - 04.04
- leaflet (English)


