Trust DOORCAM-4002B Video Doorbell Camera, 3 MP, Night Vision

Trust DOORCAM-4002B is an outdoor video doorbell camera with two-way audio, night vision and a wireless chime. It supports USB-C charging or connection to 8–24 V wiring, while footage can be stored locally on a Micro SD card up to 256 GB. The listing describes the video as 3 MP and 2K HD, but buyers should confirm the storage and power details before choosing an installation.

At a glance

Two-way audio through the smartphone app lets users speak with visitors remotely.
The listing claims optional 3 MP (2K) recording, including in the dark, with recording also described as starting on detected movement.
Local footage can be saved to a Micro SD card up to 256 GB, with no subscription or cloud fees claimed for this storage option.
The doorbell can be charged via USB-C or connected to 8–24 V wiring for continuous power.
An included wireless chime is described as battery-powered and placeable around the home.

Price

£39.99Save 20%

Reference price: ~~£49.99~~

Price checked: 14 Nov 2026

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Pros and cons

Pros

Local Micro SD storage is offered as an alternative to subscription or cloud storage.
USB-C charging and wired 8–24 V power provide two stated power arrangements.
A wireless chime is listed in the package contents, alongside the two-way audio and night-vision features.

Technical specifications

18 specifications

Identity
Brand	Trust
Model	DOORCAM-4002B
Colour	Black

Video and recording
Still resolution listed	3 MP
Video resolution listed	3MP
Video format listed	MP4
Audio/video recording capabilities	Video;Audio

Connectivity and controls
Wireless connection listed	2,4-GHz
Control method	App
Compatible devices listed	2.4 GHz Wi-Fi network, Smartphone/tablet iOS 11+ or Android 6.0+, Standard USB adapter

Power and battery
Power configuration	USB-C/8-24V
Battery required	Yes
Battery voltage	3.6 Volts

Storage
Storage listed	256 GB

Installation and dimensions
Mount type	Doorbell Mount
Dimensions	35 x 53 x 142 millimetres
Weight	478 Grams

Protection
Water resistance listed	Waterproof

What to know before buying

Listing details to confirm

The listing identifies the camera as 3 MP and calls it 2K HD, but does not give a pixel width and height. It also lists 256 GB storage as a device specification while describing support for a Micro SD card up to 256 GB, so confirm whether a card is supplied. Power is described as USB-C or 8–24 V wiring, while the specifications also state that batteries are required and give 3.6 Volts. Check the selected listing and intended setup for these details.

What’s in the box

Included

Manual
Mounting materials
USB-C cable
Video doorbell
Wireless chime

Who is it for?

A good fit for

People who want a doorbell camera with app-based two-way audio and night vision.
Buyers looking for local Micro SD recording without a claimed subscription or cloud fee.
Homes where USB-C charging or compatible 8–24 V wiring suits the planned power arrangement.

Less suited to

Buyers who need a clearly stated pixel-by-pixel video resolution or an unambiguous account of battery and wired-power requirements.
Anyone who requires cloud storage or a subscription-based recording service.

Trust DOORCAM-4002B Video Doorbell Camera, 3 MP, Night Vision · photo 2 — Additional product photo 2

Customer reviews on Amazon

4.5 / 5 · 49 ratings

5 stars62%62%
4 stars29%29%
3 stars7%7%
2 stars0%0%
1 star2%2%

The supplied evidence contains aggregate ratings but no written customer feedback, so it does not establish what buyers praised or criticised. The overall rating is favourable, though a small lower-star share means experiences are not uniformly positive. Ratings alone cannot indicate how the camera, storage or power arrangement performed for individual buyers.

Frequently asked questions

Does the Trust DOORCAM-4002B record in 2K?

The listing calls the recording 3 MP and 2K HD, but does not state the pixel dimensions. Confirm the precise video resolution if that matters to your purchase.

Can it record without a subscription?

The listing describes saving footage to a Micro SD card up to 256 GB with no subscription or cloud fees. It does not clearly confirm whether a card is included.

How can the doorbell be powered?

The listing describes USB-C charging or connection to 8–24 V wiring for continuous power. It also says batteries are required and gives a 3.6-volt battery specification, so clarify the setup for the selected listing.

Is a chime included?

Yes. The listed package contents include a wireless chime, described as battery-powered.