A screen inside the house works when the phone is upstairs on charge · review
A four-apartment two-wire system with four 7-inch touchscreens and a fisheye outdoor camera stated at 170° in the listing title and 140° in its description. MATHFEL states automatic recording on motion or on a ring, with playback from the monitors or the Tuya app.
The conclusion A specialist system for a four-dwelling entrance, and the wrong purchase for anything smaller.
This system exists for one situation: an entrance shared by four separate dwellings, each of which needs its own panel and its own release.
One outdoor station with four call buttons, four monitors that ring independently, and a bus that carries all of it on a single pair of conductors through a riser. Wiring four separate doorbells to four apartments is not a scaled-up version of wiring one; it is a different problem, and this is the answer to it.
For a single house, it is three monitors of waste.
The listing title says 170°, its description 140°: either way, far more than the door frame. Shared entrances are where parcels are left and where people wait, and a narrow lens misses both. The cost is curvature at the edges of the frame, which is inherent to the lens and not a fault.
Remote access goes through Tuya — playback also works on the monitors — rather than a manufacturer platform. That is a large, established ecosystem that is unlikely to vanish, and it is also outside MATHFEL’s control. On a system four households will depend on for a decade, that is worth thinking about before buying.
A converted house or a small block with four dwellings and one door. Nothing else.
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 |
|---|---|
| Dwellings | Four |
| Monitors | Four 7-inch color touchscreens |
| Camera | Full HD; 170° per the listing title, 140° per its description |
| Recording | Automatic on motion or on ring, with playback |
| App | Tuya Smart, iOS and Android |
| Night vision | Built-in infrared LEDs |
| Weather rating | IP65 outdoor station |
| Supplied | Outdoor station with flush-mount frame and 7-inch monitors with door release; the box list names one monitor, the title four |
| Amazon reference | B096PSMFSC |
| EAN | 4260713280472 |
No. It is priced and wired for four dwellings, and a single household would be paying for three monitors it does not need. The two-monitor systems in this hub are the right answer for a house.
Straightness and edge detail. A fisheye covers the entire entrance area including the ground at the door, which is exactly what a shared entrance needs, and it curves everything at the edges of the frame. It is the right lens for the job and it will not produce a flattering portrait.
It is a large third-party platform rather than a manufacturer's own, which cuts both ways: it is unlikely to disappear, and the manufacturer does not control its updates. For a shared entrance where several households depend on it, that is worth weighing.
8.4/ 10
A specialist system for a four-dwelling entrance, and the wrong purchase for anything smaller.
A reference exists on these Amazon stores: Germany, Spain, United Kingdom. Listed is not the same as in stock — availability changes daily.
Details checked on September 2, 2026.
A converted house or small block with four separate dwellings on one entrance.
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
