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Wired or wireless video door phone: follow the cable

Updated: 16 October 2026

The old handset is dead, and the cable behind it decides the replacement. A wired or wireless video door phone is not a style choice. Four intact cores, two intact cores, and no cores are three different kits. Wireless on a title can mean the outdoor unit, the monitor, or only the app. This page is that fork. Prices are amazon.co.uk figures on 15 October 2026. The wider set is the [video door intercom comparison](/hub/burglar-protection/video-door-intercom). The Products Compared editorial team compared the stored listings and public UK notes, with no laboratory fitting. A qualifying purchase can earn a commission at no extra cost to you.

The old handset is dead, and the cable behind it decides the replacement. A wired or wireless video door phone is not a style choice. Four intact cores, two intact cores, and no cores are three different kits.

Our top picks

EZVIZ EZVIZ CP5 7 inch Wi-Fi video door phone

Best overall

EZVIZ EZVIZ CP5 7 inch Wi-Fi video door phone
8.9/10about £161.49
View offer
ACEBELL ACEBELL 7 inch Wi-Fi video intercom

Alternative

ACEBELL ACEBELL 7 inch Wi-Fi video intercom
7.6/10about £189.99
View offer
TMEZON TMEZON 7 inch wired video intercom

Preis-Tipp

TMEZON TMEZON 7 inch wired video intercom
7.6/10about £79.99
View offer
On this page
  1. 1.Four cores in the wall
  2. 2.Two cores in the wall
  3. 3.No cable, or a door you must not drill
  4. 4.What wireless still needs

Four cores in the wall

Four intact conductors from the door to the room are a 4-wire video door phone. In this set that is the TMEZON MZ-V20 at about £79.99, the two-monitor TMEZON at about £135.99, and the QingTianTongYun V168M4 at about £79.99. The single TMEZON is a 7 inch screen, IP65, with live view from the monitor and no app. The extension cable is not in the box. The two-monitor pack adds call transfer and a second socket. The V168M4 states 100 metres on 4-core cable, a 4.3 inch screen and 700TVL, which is not 1080p. Its parts list includes a UK 3-pin adapter, while a bullet says the power supply is not included. Two wires will not feed this bus. Fitting the extension is on how to install a video door intercom.

Two cores in the wall

Two intact conductors are the EZVIZ CP5, at about £161.49 with 4.4 from 1,330 reviews. The listing supports 2-wire installation. A UK review says you need two wires, ideally a twisted pair, and that there was no wiring diagram. The maker also says 4-wire is possible. That does not turn a TMEZON into a 2-wire kit. The CP5 is a 7 inch touch screen, 1080p across about 134°, with unlock from the monitor, the app or two RFID tags. Power comes through the cable. The app needs Wi-Fi, so the screen still answers if the router is off. The linking cable is not included. A 4-wire TMEZON in a confirmed 2-wire flat fails at the first terminal.
EZVIZ EZVIZ CP5 7 inch Wi-Fi video door phone

Testsieger

EZVIZ EZVIZ CP5 7 inch Wi-Fi video door phone
8.9/10about £161.49
View offer

No cable, or a door you must not drill

No copper, or a tenancy that forbids chasing, points you at a radio kit. If someone must answer away from home, the ACEBELL at about £189.99 and the XPJ at about £207.99 are the 7 inch Tuya kits. ACEBELL and XPJ claim a private link that can work without the router. The app still uses Wi-Fi. Both warn against a metal door. Outdoor cells are about 7,000 mAh, with a 45 to 60 day claim an ACEBELL review does not support. If you will not create an account, leave those kits. The TKMARS at about £58.99 has 748 reviews. The Winnes listings are about £59.99 and about £62.99 on much thinner files. That limit is video door phone no Wi-Fi. These 2.4 GHz units can be licence-exempt under Ofcom if they do not cause undue interference. Exemption is not a range through a terrace.

What wireless still needs

Wireless here is rarely both ends being portable. The outdoor unit may be a battery, and the indoor screen may still want a socket all day. ACEBELL quotes about 5 to 8 hours for the monitor, XPJ about 6 to 8 hours, and both are meant to stay on charge. The TKMARS screen stays plugged in, with about 30 minutes of backup. Optional 12–24 V on the ACEBELL and XPJ feeds the outdoor unit. It does not make either a 4-wire door phone, and it is not a new mains circuit. Open-air figures are not indoor distance. The TKMARS bullets put indoors at 5 to 10 metres. Use a 4-wire monitor when you have four cores and nobody needs a phone. Use the CP5 when you have two cores and you want the app. Use a radio kit only when there is no cable.

Common questions

I can see two wires. Which kits are honest?
The EZVIZ CP5 states a 2-wire install, and a UK review wants those wires as a twisted pair. The maker also allows 4-wire on that station. A TMEZON or a V168M4 still wants four cores. A battery doorbell does not use the old bell pair unless you add a separate low-voltage feed.
I can see four wires. Will a battery doorbell use them?
Not as a 4-wire bus. ACEBELL and XPJ can take 12–24 V at the outdoor unit, and that feed is not the picture bus a TMEZON uses. If the four cores are intact and you do not need a phone, the TMEZON at about £79.99 uses the cable. The CP5 can also take 4-wire if you want the app as well.
Will a private-radio kit reach the upstairs landing?
Use the indoor figure. The TKMARS bullets say 50 metres in the open and 5 to 10 metres indoors. A landing beyond that is a poor bet. If you already have four cores, a wired monitor is the more predictable second room. The two-monitor TMEZON is the pack when both rooms must answer.
Is a 12–24 V feed the same as mains wiring?
No. It is an extra-low-voltage feed for an outdoor unit that can also run on its battery. It is not a new circuit at the consumer unit, and it does not turn an ACEBELL into a 4-wire door phone. If you cannot identify the transformer, stop and ask an electrician. A missing connector means you do not improvise a feed from a lighting circuit.
What fails if I buy 4-wire for a confirmed 2-wire flat?
The picture has nowhere to go. The TMEZON and the V168M4 expect four cores, and two bell wires cannot stand in for the missing pair. You then buy a new cable run or you return the kit. The CP5 is the station here that states it can use two wires. Count every intact core before you order.

Related pages

Best kits

Buying guide

Video door intercoms

How to install a video door intercom without new mains

Video door phone no Wi-Fi: the monitor is the handset

Sources

Public UK sources and the amazon.co.uk listings in this comparison. Listings read on 15 October 2026.

  1. ICO: home CCTV systems (retrieved 15 October 2026)
  2. GOV.UK: domestic CCTV, including video doorbells (retrieved 15 October 2026)
  3. GOV.UK: Approved Document P, electrical safety in dwellings (retrieved 15 October 2026)
  4. IET: Part P frequently asked questions (retrieved 15 October 2026)
  5. Ofcom: short-range devices (retrieved 15 October 2026)
  6. Business Companion: mixed contracts and the Consumer Rights Act 2015 (retrieved 15 October 2026)
  7. Which?: how to buy a smart video doorbell (retrieved 15 October 2026)
  8. EZVIZ: CP5 product page (retrieved 15 October 2026)