Independent comparisons. We may earn from shop links. More info

How to install a 3 flat video intercom

Updated: 22 October 2026

You are about to pull cable for three monitors. How to install a 3 flat video intercom, for the kits in this amazon.co.uk set, is an order of work rather than a universal wiring diagram. The included lead is a few metres. The riser in a conversion is longer, and the diagram that matters is the one in the box you bought. A qualifying purchase from our [3 apartment intercom system comparison](/hub/electronic-surveillance/3-apartment-intercom-system) can earn a commission at no extra cost to you. If you have not checked station count and cable type, start with the [3 flat door entry system buying guide](/hub/electronic-surveillance/3-apartment-intercom-system/sub/3-apartment-intercom-system-buying-guide).

You are about to pull cable for three monitors. How to install a 3 flat video intercom, for the kits in this amazon.co.uk set, is an order of work rather than a universal wiring diagram.

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
View offer
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.Read the core count before you pull cable
  2. 2.Power and the UK plug
  3. 3.The outdoor station and the run between flats
  4. 4.Where you stop

Read the core count before you pull cable

These video kits are four-wire style home-runs, not a two-wire bus. On B0DWSND7WN the wiring bullet says four wires from the monitor to the doorbell, with 3 m of four-core cable supplied per doorbell and a 1.2 m power lead per monitor. On B0F6LGP1MW a bullet states 5 m of cable. It is not a loom that reaches from a street door to three flats. A review of the 4.3 inch uoweky, B07SX3NY45, says the kit is not a two-wire bus: many cores, and one adapter per handset. A review of the 7 inch uoweky, B07P4DGCP8, describes about 12 cores to the outdoor station plus two for a lock. Those core counts are one person’s install. They are not a terminal map you can copy onto an ANJIELO board. Do not treat 50 m on a Slinex diagram as a promise for the uoweky or the ANJIELO. If the existing conduit is full, stop. Cat5 is not stated as the cable for these ASINs.

Power and the UK plug

Mains in the UK are 230 V, and a plug should be BS 1363. The door-entry cable itself should stay at extra-low voltage and away from 230 V. B07SX3NY45 lists 240 V and 3 W, corded, batteries not required. Reviews say each handset wants its own adapter, and that some parcels arrived with plugs that did not match the reviewer’s sockets. If you are in the UK, check the plug on arrival. A plug into an existing socket, outside a bathroom, is the lighter case under Approved Document P in England and Wales. A new circuit is notifiable. Part P is not the rule in Scotland or Northern Ireland. The 4.3 inch uoweky reviews describe one adapter per handset. A plug is not a new circuit. A new breaker is.
Digiteck Digiteck 903 3-way audio

Testsieger

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

The outdoor station and the run between flats

The outdoor station is a screw-in wall mount on these listings. None of them claims a tool-free fit. Reviews on both uoweky kits say there is no flush box in the parcel. On the 7 inch kit, wall plates do not suit a standard back box, and the joints are plugs rather than screw terminals. On the 4.3 inch kit, instructions are said not to match the unit. Reviews mention weak rain protection even where IP54 is printed, and one installer of the 7 inch kit added silicone and a canopy. B0F6LGP1MW says IP65 in a bullet and does not repeat an IP code in the specification block. Label each home-run at the outdoor end before you close the trunking. A button that rings the wrong flat shows up in a review of B07P4DGCP8. Monitor-to-monitor speech on the uoweky bullets does not remove the need for a separate cable to each flat.

Where you stop

Stop when the work is a new circuit, a bathroom zone, or a lock on a stair, lobby, or block entrance. In England and Wales a new circuit is notifiable. Leasehold doors often need the freeholder’s agreement before you change ironmongery. If you are briefing an electrician, give them the diagram from the kit, the core count, and the length of each run. Do not give them a colour code copied from another brand’s PDF. Fail-safe and fail-secure, a gate that wants a dry contact, and escape-route release are on the electric lock for a door entry system page. One review of the 7 inch uoweky found about 3 V standing on the lock terminals and about 12 V when the button was pressed. That was enough to hold a gate open until a relay was added. Whether you needed a camera at all is a separate decision, on the video or audio intercom for flats page.

Common questions

Do you run one cable or a cable to each flat?
On these four-wire kits you run a cable toward each monitor. One shared four-core up the stair does not feed three flats. A two-wire bus would change that pattern. It is not what these listings describe.
What length of cable is in the box?
Where a bullet states a length, B0F6LGP1MW says 5 m and B0DWSND7WN says 3 m of four-core cable per doorbell, plus a 1.2 m power lead per monitor. A few metres will not reach a top-floor flat from a street door. Buy the drum to match the diagram, after you have measured the run.
Can Cat5 be used?
These ASINs do not state Cat5, Cat5e, or Cat6 as their cable. A leftover data cable is not a documented substitute. PoE and two-wire trade systems are built around different cabling. If that is what the building has, you are in a different product, not a clever reuse of this kit.
Where does the mains plug go?
At the adapter for each monitor that needs one, into a BS 1363 socket, outside a bathroom. B07SX3NY45 is listed at 240 V and 3 W. Keep the extra-low-voltage door cable away from 230 V.
Who mounts the outdoor station if there is no flush box?
You do, with a surface box or a recess you have planned, or an installer does. Reviews say the uoweky parcels do not include a flush box, and the 7 inch plates do not suit a standard back box. Screw-in is the mount these pages state.

Related pages

Best intercom for 3 flats

3 apartment intercom system

3 flat door entry system buying guide: count and cable

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

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)