BenQ LH835ST Projector
- In UK stock, ships from the UK
- UK manufacturer warranty
- UK-based engineers
- No import duty or customs charges
- GBP pricing, UK VAT invoices
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Description
The BenQ LH835ST is a 1080p (1920x1080) short-throw laser projector delivering 4000 ANSI lumens, aimed at medium and large interactive and immersive spaces. A 0.69-0.83 throw ratio produces large images from short distances, and a laser light source rated at 20,000 hours in normal mode, combined with 3,000,000:1 contrast, delivers bright, vibrant images with consistent long-term performance. Connectivity is notably modern for this class of projector: dual HDMI inputs, DisplayPort, two USB Type-A ports and a USB Type-C port with DisplayPort Alt Mode support for single-cable laptop connections, alongside RS232 for control integration and dual infrared receivers for remote flexibility. Auto screen fit, quick focus and motorised zoom simplify installation, while BenQ's white balance adjustment supports consistent colour when used in multi-projector blended setups. With 2D keystone correction and corner correction (+/-30 degrees), the LH835ST suits simulation training, interactive exhibits and immersive entertainment spaces, and is backed by BenQ's standard 3-year warranty.
Key features
A 0.69-0.83 throw ratio and 20,000-hour laser light source deliver 4000 ANSI lumens and 3,000,000:1 contrast for bright, vibrant images in short-throw installations.
A USB Type-C input with DisplayPort Alt Mode support enables single-cable connection from modern laptops, alongside DisplayPort and dual HDMI inputs.
Auto screen fit, quick focus and motorised zoom speed up installation, while 2D keystone and corner correction (+/-30 degrees) simplify off-axis mounting.
BenQ's white balance adjustment tools support effortless, consistent blending when the LH835ST is used alongside other units in immersive or simulation setups.
Technical specifications
Throw distance guide
With its 0.69–0.83:1 throw ratio, here's how far the projector needs to sit from the screen for common 16:9 image sizes. Try our throw distance calculator for your exact room.
| Image size | Image dimensions | Lens distance range |
|---|---|---|
| 60" | 1.33 m × 0.75 m | 0.9 m – 1.1 m |
| 80" | 1.77 m × 1.00 m | 1.2 m – 1.5 m |
| 100" | 2.21 m × 1.25 m | 1.5 m – 1.8 m |
| 120" | 2.66 m × 1.49 m | 1.8 m – 2.2 m |
| 150" | 3.32 m × 1.87 m | 2.3 m – 2.8 m |
Planning from a real wall? Use the projector room planner to upload a photo, preview the image to scale and find projectors that fit within your maximum available space.
Distances are lens-to-screen, calculated from the manufacturer's stated throw ratio; allow for lens shift and mounting hardware. Always confirm against the manufacturer's installation guide before fixing mounts.
See it on your wall, to scale
Choose a picture size, then upload a wall photo—or scan the QR code and take it on your phone. We'll show the projected picture at its real size.
Documents
Delivery & returns
Estimated delivery 29 Aug - 2 Sept. UK mainland delivery only — some large or made-to-order items may carry longer lead times.
Unused items in original packaging can be returned within 14 days of delivery. Faulty items are covered under manufacturer warranty.
Bought in the UK, backed in the UK
This item is in UK stock and ships to you from within the UK, so the order never crosses a customs border on its way to you.
The manufacturer warranty is honoured here in the UK. If something fails, you deal with us — not with an overseas seller in another time zone.
Our own UK-based engineers install, commission and support what we sell, and can attend site when a system needs hands on it.
Delivered within the UK mainland, so there is no import duty, customs charge or courier handling fee waiting for you on delivery.
Prices are in pounds sterling with proper UK VAT invoices, and purchase orders are accepted from approved education accounts — no currency conversion and no surprises at the door.
Payment & security
Pay securely by card. Education customers can apply for a 30-day purchase order account.
Schools, colleges, sixth forms, universities and multi-academy trusts can order on invoice — no card payment required. Purchase orders and credit terms are for education customers only.
All transactions are processed over an encrypted, secure checkout.
Need help specifying this for your space?
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