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3 flat door entry system buying guide

Updated: 22 October 2026

You own a three-flat conversion and the shared door still has a dead handset or no entry system at all. A 3 flat door entry system buying guide starts with the building, not with a screen size. You need one indoor station per dwelling, a cable the conduit can actually hold, and a lock that fails in a direction you have chosen. The six amazon.co.uk listings in our [3 apartment intercom system comparison](/hub/electronic-surveillance/3-apartment-intercom-system) run from £194.00 for a Digiteck audio kit to £599.99 for a 10 inch ANJIELO listing whose own page disagrees about the monitor count. A qualifying purchase can earn a commission at no extra cost to you.

You own a three-flat conversion and the shared door still has a dead handset or no entry system at all. A 3 flat door entry system buying guide starts with the building, not with a screen size.

Our top picks

Digiteck Digiteck 903 3-way audio

Best overall

Digiteck Digiteck 903 3-way audio
6.8/10about £194.00
View offer
uoweky uoweky 7 inch RFID, 3 monitors

Rank 2

uoweky uoweky 7 inch RFID, 3 monitors
8.2/10about £209.99
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uoweky uoweky 4.3 inch, 3 monitors

Best value

uoweky uoweky 4.3 inch, 3 monitors
7.6/10about £200.99
View offer
On this page
  1. 1.Count the flats, then the monitors
  2. 2.Match the cable you already have
  3. 3.Lock, weather, and who may film the path
  4. 4.When the amazon.co.uk kit is the wrong budget

Count the flats, then the monitors

Three dwellings need three indoor stations, or a true three-flat audio layout you can see in the box line. A sentence that says up to 12 is a catalogue range, not a promise that this parcel contains three monitors. The variation title is the line you read before you add the item to the basket. The Digiteck 903, ASIN B01KZHONLO, at £194.00, is the awkward case. The name says 3-way. The box line lists an outdoor unit, an indoor electric lock kit, and a power supply. It does not say three indoor handsets, and the number-of-items field is 1. You should not treat the words 3-way as three flats. The ANJIELO SMART listing B0DWSND7WN, at £599.99, fails the same test in the other direction. The title says one doorbell and three monitors. A bullet says two indoor 10 inch screens and two occupants. Until the seller confirms which sentence is the parcel, that listing is not a three-flat buy. The uoweky kits are clearer on this one point: B07SX3NY45 states three call buttons, each calling one monitor, and B07P4DGCP8 states one outdoor camera and three indoor monitors for three households.

Match the cable you already have

A four-wire video kit wants a home-run toward each monitor. One four-core cable dropped once up the stair will not become three monitors because the title says apartment. On B0DWSND7WN the wiring bullet says four wires from monitor to doorbell, with 3 m of four-core cable supplied per doorbell. On B0F6LGP1MW a bullet states 5 m of cable. Those leads are a bench length, not a riser. If your conduit is already full of an old speech pair, the kit will not shrink to fit. A two-wire bus and Power over Ethernet are different products, and neither is in the six kept listings. On B0F6LGP1MW and B0DWMYFP3D the title says wired and the specification block says Wi-Fi, with no app steps. Treat that as a clash, not as a tested phone unlock. The order of the work is on the how to install a 3 flat video intercom page.
Digiteck Digiteck 903 3-way audio

Testsieger

Digiteck Digiteck 903 3-way audio
6.8/10about £194.00
View offer

Lock, weather, and who may film the path

Works with an electric lock is a compatibility sentence. It is not a strike in the box. In this set only the Digiteck box line includes an electric lock kit and a power supply. B0F6LGP1MW says you need a power controller. None of them states fail-safe or fail-secure. Which one your communal door needs is set out on the electric lock for a door entry system page. B07SX3NY45 prints IP54. B0F6LGP1MW says IP65 in a bullet and prints no IP code in the specification block. The other video listings say waterproof, or a rain cover, with no code. A camera at a shared entrance is a data-protection job when it films past your boundary. The Information Commissioner’s Office says that if a home camera records beyond that boundary you should capture less, put up a sign, store the footage, delete it, and answer people who appear in it. If you will not do that paperwork, stay with speech.

When the amazon.co.uk kit is the wrong budget

These shelf prices are the kits, not the installed door. Entry in this set is about £194 to £210 for the Digiteck audio kit and the two uoweky video kits. The contradictory 10 inch listing is £599.99. Intelligent Home Online lists Victor and DigiOpen examples around £825 to £1,022 including VAT. Those are that site’s shelf prices, not a market study. Eagle All Security publishes an installed band of £800 to £1,500 for two to four flats, and says a leaseholder needs the freeholder’s approval before work on a communal door. Leave this shortlist when the conduit is full, when the lock must release on a fire alarm, or when the freeholder will only accept a named trade system.

Common questions

Can the old door-entry cable be reused?
Only if it matches the kit you are buying. The four-wire listings expect a home-run toward each monitor. An old speech pair is not that loom. A two-wire bus or PoE kit is not one of these six ASINs.
What does a trade 3-flat system cost compared with these kits?
The amazon.co.uk kits kept here run from £194.00 to £599.99 as shelf prices on 19 October 2026. Specialist examples on Intelligent Home Online sit around £779 to £1,022 including VAT. Eagle’s £800 to £1,500 band is that firm’s published range, not a national average.
Do you need the freeholder’s permission?
If you are a leaseholder and the door is communal, Eagle All Security says you need the freeholder’s approval. That is one installer’s statement, not a reading of your lease. Check the lease before you drill the entrance.
When does a door camera become a data-protection job?
When the camera records beyond your boundary. The ICO expects you to film less, sign it, store it, delete it, and respond to people in the footage. Audio of conversation at that door is unlikely to be justified.
When is a new circuit notifiable?
In England and Wales, Approved Document P treats a new circuit as notifiable. A plug into an existing socket outside a bathroom is a lighter case, and the work should still suit BS 7671. Scotland and Northern Ireland have their own building rules.

Related pages

Best intercom for 3 flats

3 apartment intercom system

Electric lock for a door entry system: fail-safe check

How to install a 3 flat video intercom, cable first

Video or audio intercom for flats: picture or speech

Sources

Public UK sources from the research digest, used for this page in October 2026. Prices, stars and review counts are from the six amazon.co.uk listings captured on 19 October 2026. Trade-shop prices are context and are not a score. Star ratings are not UK-only opinion. Part P is the England and Wales rule cited here, not the rule in Scotland or Northern Ireland. A line that says a kit works with an electric lock does not include the lock, a dry contact, or a fire-alarm release.

  1. ICO, home CCTV systems (retrieved 19 October 2026)
  2. Approved Document P (2013) (retrieved 19 October 2026)
  3. IET, Part P frequently asked questions (retrieved 19 October 2026)
  4. Approved Document B, volume 1 (retrieved 19 October 2026)
  5. Tynetec Entel Ultra installation guide (retrieved 19 October 2026)
  6. Consumer Rights Act 2015, section 22 (retrieved 19 October 2026)
  7. Intelligent Home Online, flats door entry prices (retrieved 19 October 2026)
  8. amazon.co.uk listings captured 19 October 2026 (retrieved 19 October 2026)