A screen inside the house works when the phone is upstairs on charge · review
A two-wire bus system with two indoor monitors, designed to reuse an existing bell cable rather than needing new conductors. Goliath states a 2 MP sensor, capacitive touchscreens and expansion with further indoor or outdoor stations.
The conclusion A proper wired system at a fair price, provided a two-core cable already runs to the door. Check that first.
This is where intercoms stop being consumer gadgets and start being building services. A two-wire bus system needs no Wi-Fi between door and screen: power, video and audio share one pair of conductors between the door and the monitors. The monitor joins Wi-Fi only for the app.
How many conductors already run to your door. A two-wire system usually reuses an existing bell cable, which turns the job into a morning. A system needing four cores, on a house with two, means chasing new cable through a wall or under a path — a different project entirely, and one worth knowing about before ordering rather than after.
Count the wires first. It is the single most useful thing you can do before buying any intercom.
A panel in the hall is not answered from upstairs. On a two-story house, the second monitor is what turns the system from something you run downstairs for into something that works. Buying the pair is cheaper than adding one afterwards.
2 MP — 1080p. Against the 2K of the EZVIZ CP7 that is modest, and the trade is deliberate: a bus system’s advantage is that it works every time, not that it produces the sharpest picture.
A house with existing bell wiring, two floors, and a preference for infrastructure over gadgets.
Not found on the American Amazon store, where the buy link falls back to a local search rather than to a page that does not exist.
Prices and availability are what Keepa reported on the date this page was updated; both move.
| Wiring | 2-wire bus |
|---|---|
| Monitors | Two 7-inch capacitive touchscreens |
| Outdoor unit | Surface-mounted |
| Sensor | 2 MP |
| Expansion | Additional indoor and outdoor stations supported |
| Access control | Door release supported |
| Field of view | 150° diagonal |
| Night vision | Infrared, stated by Goliath |
| Ratings | IP65 and IK07, stated by Goliath |
| App | Through Wi-Fi on the indoor monitor, microSD up to 64 GB |
| Amazon reference | B0CTQLWJS6 |
| EAN | 4251909209155 |
It is a system where power, video and audio all travel on the same pair of conductors. That means an existing two-core bell cable can usually be reused, which is the difference between a morning's work and chasing new cable through a wall. Establish how many conductors run to your door before you choose any intercom.
Because a single panel in a hall is unanswered from upstairs. On a two-story house, a second monitor is what makes the system usable rather than a device you run downstairs for — and buying the set is cheaper than adding one later.
This is the surface-mounted outdoor unit, which fixes onto the wall face. It is far easier to install and slightly more exposed to weather and to being levered. A flush unit sits in the wall, looks better and requires a recess to be cut.
7.8/ 10
A proper wired system at a fair price, provided a two-core cable already runs to the door. Check that first.
A reference exists on these Amazon stores: France, Germany, Italy, Spain, United Kingdom. Listed is not the same as in stock — availability changes daily.
Details checked on September 2, 2026.
A house with an existing two-core bell cable and two floors that both need a panel.
Specifications: the manufacturer sheet for home security products and the matching Amazon product page. Prices and availability: Keepa. Every figure on this page names its source.
Flush-mounted outdoor unit · 150° Full HD · 7-inch monitor · app · IP54 and IK07 · tamper alarm
A complete single-family set with a flush-mounted outdoor station, a 150° Full HD camera, a 7-inch monitor and app access. Balter states IP54 and IK07 ratings and a tamper alarm on the outdoor unit.
Best for: A new or renovated entrance where a recess can be cut and the outdoor unit should sit flush in the wall.
Surface-mounted outdoor unit · 150° Full HD · two 7-inch monitors · app · IP54 and IK07
The surface-mounted version of the ENTRI set, supplied with two 7-inch monitors. Same 150° Full HD camera, same IP54 and IK07 ratings, same tamper alarm — and no recess to cut.
Best for: An existing house with two floors, where cutting into the wall is not on the table.
7-inch master station · die-cast aluminum vandal-resistant door station · 24 V DC · 165 ft on 22AWG, 330 ft on 18AWG — the only cable run length on this shelf · 30 stored still images · expandable to 1×2 only · the page lists JV-series parts in its bullets and JO-series parts in its description
The only listing here that tells you how far the cable can run — on a page that names two different product families for the same box.
Best for: A long cable run to a gate, where the distance figure and die-cast construction justify seven hundred dollars
≈ $700
