
Vivitek DH3665ZN 4,500 Lumen 1080p Laser Projector with NovoConnect
- Visa
- Mastercard
- American Express
- PayPal
Seen it cheaper? We price-match genuine like-for-like quotes. How it works
- In UK stock, ships from the UK
- UK manufacturer warranty
- UK-based engineers
- No import duty or customs charges
- GBP pricing, UK VAT invoices
Description
The Vivitek DH3665ZN is a standard throw DLP projector with a native 1920 x 1080 resolution and a rated brightness of 4,500 ANSI lumens. A laser phosphor light source replaces the traditional lamp, so there are no lamps to change and brightness stays more consistent over the life of the unit.
Its main difference from a standard projector is the embedded NovoConnect platform. Laptops, tablets and phones running Windows, macOS, Ubuntu, Chromebook, Android or iOS can present wirelessly, up to four sources can be shown on screen at once, and moderation lets the host control who is presenting. Annotation tools are also built in.
For installation it offers a 1.5x zoom (1.39 to 2.09:1 throw ratio), keystone correction of up to 30 degrees in both directions and a full set of wired inputs, including two HDMI, VGA, composite, LAN and RS-232. Vivitek positions it for medium-sized meeting rooms, and NovoConnect is offered in corporate and education editions.
Key features
Lamp-free laser phosphor engine rated at up to 20,000 hours, so no lamp replacements are needed.
Wireless presenting and screen mirroring from Windows, macOS, Ubuntu, Chromebook, Android and iOS devices, with up to four screens shown at once.
A presenter or teacher can choose which device is shown and draw on the projected content.
1.5x optical zoom, 1.39 to 2.09:1 throw ratio and keystone correction of up to 30 degrees vertically and horizontally.
Two HDMI inputs, VGA in and out, composite video, audio in and out, microphone input, RJ45 LAN and RS-232 for control.
Technical specifications
Choose a section to view its specifications.
Display (4)
- Brightness
- 4,500 ANSI lumens
- Resolution
- 1920 x 1080 (1080p) native, up to 1920 x 1200 @ 60Hz input
- Contrast Ratio
- 20,000:1
- Aspect Ratio
- 16:9
Connectivity (2)
- Connectivity
- 2x HDMI, VGA in, VGA out, composite, audio in (RCA and 3.5mm), audio out, mic in, RJ45 LAN, RS-232, USB-A (5V/1.5A power), USB-B (service)
- Wireless Presentation
- Embedded NovoConnect, up to 4 screens at once
Audio (1)
- Speaker
- 10 W
Power & Physical (5)
- Image Size
- 25.9" - 324.9"
- Power Consumption
- 340 W normal, 270 W eco, <0.5 W standby
- Weight
- 7 kg
- Dimensions
- 395 x 340 x 135 mm (W x D x H, without feet)
- Colour
- White
General (10)
- Light Source
- Laser phosphor
- Light Source Life
- Up to 20,000 hours
- Projection Technology
- Single-chip 0.65" DLP
- Throw Ratio
- 1.39 - 2.09:1
- Zoom
- 1.5x optical
- Projection Distance
- 1.2 - 10 m
- Offset
- 130% half-height, 115% full-height
- Keystone Correction
- Vertical and horizontal ±30°
- Noise Level
- 35 dB normal / 33 dB eco
- In the box
- Projector, remote control with battery, AC power cord, VGA cable, quick start guide
Throw distance guide
With its 1.39 to 2.09:1 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.
Manufacturer lens-distance limit: 1.2 m to 10 m. The dotted lines show the usable zoom positions for this picture size.
| Image size | Image dimensions | Lens distance range |
|---|---|---|
| 40" | 0.89 m × 0.50 m | 1.2 m to 1.9 m |
| 60" | 1.33 m × 0.75 m | 1.8 m to 2.8 m |
| 80" | 1.77 m × 1.00 m | 2.5 m to 3.7 m |
| 100" | 2.21 m × 1.25 m | 3.1 m to 4.6 m |
| 120" | 2.66 m × 1.49 m | 3.7 m to 5.6 m |
| 150" | 3.32 m × 1.87 m | 4.6 m to 6.9 m |
| 200" | 4.43 m × 2.49 m | 6.2 m to 9.3 m |
| 250" | 5.53 m × 3.11 m | 7.7 m to 10 m |
| 300" | 6.64 m × 3.74 m | 9.2 m to 10 m |
Planning from a real wall? Use the projector screen size calculator to upload a photo, preview the image to scale and find projectors that fit within your maximum available space. Replacing an existing projector? The projector replacement calculator checks whether this lens covers the ratio your current mount needs.
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.
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.
Delivery & returns
Estimated delivery 4 Nov - 8 Nov. 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.
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, with no card payment required. Purchase orders and credit terms are for education customers only.
All transactions are processed over an encrypted, secure checkout.
Alternative products
Closest matches in this category on price and capability. Not sure which way to go? Our technical team will talk it through.


ViewSonic LS711HD 4,200 ANSI Lumens 1080p Short Throw Laser Installation Projector

ViewSonic LSC601WU-ST 6,000 ANSI Lumens Short Throw Laser Projector

ViewSonic LSC601WU 6,000 ANSI Lumens WUXGA Laser Projector
Need help specifying this for your space?
Ask Andrew. He knows the full catalogue and can advise on installation, mounting and compatible AV systems.
Trusted by our projector customers
Explore recent installations
See recent installations supplied by StriveAV, TopAV’s parent company. Customer names are masked for privacy.
Reviewed by people who bought from us
Every review is collected independently by Trustpilot from people who have bought from us. Read them there →