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BenQ

BenQ LK835ST Projector

Name: BenQ LK835ST Projector
Brand: BenQ
SKU: 9H.JT577.13E
Price: 2374.80 GBP
Availability: InStock

Return within 14 days

Manufacturer warranty

Installation services available

£2,374.80inc. VAT

£1,979.00 ex. VAT

In stock, dispatched within 2 working days

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Bought in the UK, backed in the UKWhy it matters →

In UK stock, ships from the UK
UK manufacturer warranty
UK-based engineers
No import duty or customs charges
GBP pricing, UK VAT invoices

Return within 14 days

Manufacturer warranty

Installation services available

Call 01342 580255

Key specifications

Number of colours1.07 billion colours

Projector native resolution4K (4096x2400)

Native aspect ratio16:9

Screen size compatibility1524 - 3048 mm (60 - 120")

Contrast ratio (typical)3000000:1

Zoom capabilityYes

Keystone correction, vertical-30 - 30°

Keystone correction, horizontal-30 - 30°

All 54 specifications

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Description

4K Clarity for Immersive Visuals and Detail-filled Experiences

Also in this range:LK830ST LK954ST Full specifications Compare alternatives

Discover breathtaking clarity with 4K resolution, bringing intricate details and vibrant colours to life. LK835ST ensures precise alignment with its motorised zoom, 3D Keystone Correction, and curved screen warping, allowing for quick and easy setup. With the power of 4K resolution, it enhances the immersiveness of any content, making it perfect for educational, interactive, and entertainment setups.

Seamless Alignment and Sharp Focus from any Angle

Quick Focus

Remote, hot-key, or RS232 control snaps the picture into sharp focus in seconds.

Auto Screen Fit

Aligns the image to the screen in three guided steps, removing manual shift and keystone work.

*Note:

Auto Screen Fit supports 16:9, 16:10, 4:3, and 1:1 aspect ratios.

For non-standard aspect ratios, please view the video and adjust via graphic card settings.

Enclosure or screen border requires at least 2 inches of width.

20,000-Hour Lifespan with No Lamp Replacement

Guarantees up to 20,000 hours of maintenance-free operation, saving you money on lamp replacements and maintenance. Take advantage of the consistently impressive brightness for up to 30,000 hours under Eco Mode.

Call 01342 580255

Key features

Experience Detailed, Immersive Visuals in 4K Clarity

Discover breathtaking clarity with 4K resolution, bringing intricate details and vibrant colours to life. The LK835ST ensures precise alignment with its motorised zoom, 3D Keystone Correction, and curved screen warping, allowing for quick and easy setup. With the power of 4K resolution, it enhances the immersiveness of any content, making it perfect for educational, interactive, and entertainment setups.

Technical specifications

Number of colours1.07 billion colours

Projector native resolution4K (4096x2400)

Native aspect ratio16:9

Screen size compatibility1524 - 3048 mm (60 - 120")

Contrast ratio (typical)3000000:1

Zoom capabilityYes

Keystone correction, vertical-30 - 30°

Keystone correction, horizontal-30 - 30°

Projection technologyDLP

Projector brightness4000 ANSI lumens

Light source typeLaser

Service life of light source20000 h

Service life of light source (economic mode)30000 h

FocusMotorized

Throw ratio0.69~0.83

Offset102.5%

Full HDYes

Supported video modes480i, 480p, 576i, 576p, 720p, 1080i, 1080p, 2160p

Supported graphics resolutions640 x 480 (VGA), 3840 x 2160

Built-in speaker(s)Yes

Number of built-in speakers1

RMS rated power10 W

HDMI version1.4a

VGA (D-Sub) ports quantity0

HDMI ports quantity2

Composite video in0

DisplayPorts quantity1

Serial interface typeRS-232

PC Audio outYes

DVI portNo

Component video (YPbPr/YCbCr) in0

AC (power) inYes

Ethernet LANNo

Wi-FiYes

Noise level34 dB

Noise level (economic mode)28 dB

Product colourBlack

Market positioningHome cinema

Product typeShort throw projector

Cable lock slot typeKensington

Cable lock slotYes

AC input voltage100 - 240 V

Power consumption (max)320 W

Power sourceAC

Power consumption (typical)212 W

Power consumption (standby)0.5 W

Power consumption (economy mode)136 W

Operating temperature (T-T)0 - 40 °C

Weight3.4 kg

Width303.5 mm

Depth112.4 mm

Height234.5 mm

Remote control includedYes

Cables includedAC

Call 01342 580255

Throw distance guide

With its 0.69 to 0.83:1 throw ratio, here's how far the projector needs to sit from the screen for common 16:10 image sizes. Try our throw distance calculator for your exact room.

Try a size

100"

16:10 diagonal image

Image

2.15 m × 1.35 m

Lens position

1.5 m to 1.8 m

Side view: drag the projector to try its available lens positions

Position fits

Image size	Image dimensions	Lens distance range
60"	1.29 m × 0.81 m	0.9 m to 1.1 m
80"	1.72 m × 1.08 m	1.2 m to 1.4 m
100"	2.15 m × 1.35 m	1.5 m to 1.8 m
120"	2.58 m × 1.62 m	1.8 m to 2.1 m
150"	3.23 m × 2.02 m	2.2 m to 2.7 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.

Picture size

100" 16:10 · 2.15 m × 1.35 m

On a computer, the QR code sends your phone photo straight back to this page.

Upload a photo of your wallGet a sheet of A4 in the shot, flat against the wall; you'll tap its ends to set the scale

Complete your setup

Optional extras that fit this product. Tick anything you need and it joins the same basket — or add this product on its own from the buy box above.

Choose a Mount

Choose a Screen

Video Conferencing

No video conferencing options found in our catalogue.

Professional Installation

Want it installed by our AV experts? We offer professional on-site installation including mounting, cable management, and system configuration.

Add installation enquiry

We'll contact you to arrange a site survey

POA

Your Configuration

BenQ LK835ST Projector × 1£2,374.80

Total£2,374.80

inc. VAT

Delivery & returns

Estimated delivery 6 Sept - 10 Sept. UK mainland delivery only. Some large or made-to-order items carry longer lead times, shown on the product page.

Unused items in original packaging can be returned within 14 days of delivery — see the returns policy for how business and consumer returns differ. Faulty items are covered under manufacturer warranty and by your statutory rights.

Full delivery & returns policy

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.

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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, with no card payment required. Purchase orders and credit terms are for education customers only.

All transactions are processed over an encrypted, secure checkout.

Purchase order & invoice terms