The interesting question is what happens when the battery dies · review
The widest door compatibility on this shelf and the shortest battery life on it, in the same lock.
The conclusion Forty to a hundred and twenty millimeters of door thickness, with the 6068 plate dimensions published so the mortise can be measured first — for a thick composite or an old solid door that is the whole reason to buy it, and nothing else here comes close. Seven credentials, an intercom and a camera for two hundred dollars. Against that: three to four months of battery, the shortest on this shelf, no BHMA grade, no IP rating, and nothing said about where the face data goes.
No BHMA grade. No IP rating. Nothing about where face data is stored.
Which is why this lock exists.
Most of this shelf fits 35 to 54 mm (1.38 to 2.13 in) — a standard North American or European residential door.
A composite door with heavy insulation, a reinforced security door, an old solid timber door: far thicker.
Forty to a hundred and twenty covers essentially everything. And the 6068 plate at 24 by 240 mm (9.45 in) is published, so the existing mortise can be measured against it.
Nothing else here comes close.
The shortest on this shelf.
A year is the longest here. Six to eight months is normal.
A 3D face sensor with a 5 to 20 cm (2 to 7.9 in) presence trigger has to be ready whenever somebody approaches, which costs power a keypad does not.
The 4200 mAh pack recharges over USB-C, so the cost is three or four recharges a year rather than cells to buy.
The palm lock on this shelf answers the same problem with presence radar.
Which tells you how to use it.
Two to eight inches. The lock reads a face at arm’s reach, not from the garden path.
A deliberate lean-in, every time. Worth knowing before expecting a door to open as you walk up to it.
A grade, and a seal.
No BHMA certification, where four locks on this shelf publish one. No IP rating, where five do.
The second matters more here than usual, because this lock has a camera and a face sensor outdoors.
The comparable face-recognition lock on this shelf publishes IP67 and states that biometric data stays on the lock. This one publishes neither.
Aluminum alloy with a spray-painted finish describes the appearance, not the weather sealing.
On sale at around $200 on the American Amazon store at the time of checking.
Prices and availability are what Keepa reported on the date this page was updated; both move.
Prices quoted in this text were read on October 8, 2026. The live price is at the top of the page.
| Fitting | Doors from 40 to 120 mm (1.57 to 4.72 in), with a 6068 mortise plate measuring 24 × 240 mm (0.94 × 9.45 in) — both stated. It is by far the widest door thickness range on this shelf, where the next widest is 38 to 50 mm (1.50 to 1.97 in), and publishing the plate dimensions lets you check the mortise before ordering. 6068 is a standard mortise designation, which also means replacement bodies exist |
|---|---|
| Battery | A 4200 mAh lithium battery giving approximately 3–4 months, with USB Type-C emergency power — stated. Three to four months is the SHORTEST runtime on this shelf, where the longest is a year and most are six to eight months. A face reader that wakes at 5–20 cm (2 to 7.9 in) is expensive to keep awake |
| Failure path | Both layers: a mechanical key among the seven unlocking methods, and USB Type-C emergency power. On a lock needing recharging every three to four months, the emergency port is not a last resort but a routine part of ownership |
| Credentials | Seven ways in: face recognition, fingerprint, passcode, IC card, mechanical key, the Tuya app and a temporary password. Up to 100 total users, with fingerprint and card capacities stated to be in the specifications rather than on the page |
| Biometrics | 3D face recognition, touch-free, with a 5–20 cm (2 to 7.9 in) body sensing distance — stated, and that figure is the useful one: the lock reads a face at between two and eight inches, so it is a deliberate lean-in rather than a glance from the path. Nothing is published about where the face data is stored, which one lock on this shelf does state |
| Intercom | A camera, a doorbell and two-way intercom, stated, through the Tuya app with Alexa compatibility — the lock does the work of a video doorbell as well |
| Body | Black aluminum alloy with a spray-painted finish, stated. No BHMA grade and no IP rating appears, which on an outdoor lock with a camera in it is the gap |
| Security | Automatic locking plus anti-tamper and trial-and-error alarm functions, stated |
| Language | English and Chinese interface settings only, stated. It is the only language limit published on this shelf |
| Amazon reference | B0DNB93WC4 |
| EAN | 0850060105289 |
Because a door outside the ordinary range leaves you with almost no choice. Most smart locks on this shelf fit 35 to 54 mm (1.38 to 2.13 in) — a standard North American or European residential door — and a composite door with heavy insulation, a reinforced security door or an old solid timber door can be far thicker. Forty to a hundred and twenty millimeters covers essentially everything, and publishing the 6068 plate size at 24 by 240 mm (9.45 in) lets you measure the existing mortise against it. Nothing else here comes close.
It is the price of a face reader, and it is the shortest figure on this shelf — against a year on the longest and six to eight months for most. A 3D face sensor with a 5 to 20 cm (2 to 7.9 in) presence trigger has to be ready whenever somebody approaches, which is costly in a way a keypad is not. The 4200 mAh pack recharges over USB-C rather than needing cells, so the cost is a recharge three or four times a year rather than a purchase. On the Wyze palm lock on this shelf, radar presence detection is the answer to the same problem.
A certification and an ingress rating. There is no BHMA grade here, where four locks on this shelf publish one, and no IP rating, where five do — and that second omission matters more than usual because this lock has a camera and a face sensor mounted outdoors. The comparable face-recognition lock on this shelf publishes IP67 and states that biometric data stays on the lock; this one publishes neither. Aluminum alloy with a spray-painted finish is a description of the appearance, not of the weather sealing.
Between security devices of the same category and nearby price. Shown: what they all state. A half-filled column says nothing.
| Model | Price | Fitting | Failure path | Credentials |
|---|---|---|---|---|
| We Technology RL14 3D face recognition smart lock with camera and intercom | $200 | Doors from 40 to 120 mm (1.57 to 4.72 in), with a 6068 mortise plate measuring 24 × 240 mm (0.94 × 9.45 in) — both stated. It is by far the widest door thickness range on this shelf, where the next widest is 38 to 50 mm (1.50 to 1.97 in), and publishing the plate dimensions lets you check the mortise before ordering. 6068 is a standard mortise designation, which also means replacement bodies exist | Both layers: a mechanical key among the seven unlocking methods, and USB Type-C emergency power. On a lock needing recharging every three to four months, the emergency port is not a last resort but a routine part of ownership | Seven ways in: face recognition, fingerprint, passcode, IC card, mechanical key, the Tuya app and a temporary password. Up to 100 total users, with fingerprint and card capacities stated to be in the specifications rather than on the page |
| Philips DDL242X-1HW-L 4200 Series Wi-Fi keypad deadbolt with handle set | $170 | Doors 1-3/8 in to 1-3/4 in (38–50 mm) thick, installable with a screwdriver, and designed for RIGHT-OPENING doors by default: a left-opening door needs the lock reset for the direction. Philips also warns against overtightening the screws, which can make it hard to lock | NOT PUBLISHED. Ten bullets, one of them devoted entirely to the battery and its prohibitions, and not one word about a physical key or an emergency power terminal. This shelf's tag reads: the interesting question is what happens when the battery dies. This shelf's introduction says the answer is a key override, an emergency terminal that takes a power bank, or nothing at all — and at least ten of the fifteen locks here answer it | Keypad codes — permanent, one-time, periodic and recurring — plus fingerprints unlocking in 0.3 seconds, the app, and Alexa or Google voice. Four code types is the most flexible code scheme on this shelf |
| YINTIN X5 3D face recognition smart lock with camera, palm vein and 4-inch indoor screen | $259 | A MORTISE lock body larger than a standard mechanical deadbolt, and YINTIN says so plainly: before ordering, compare door thickness, lock-body opening and hole positions with the installation dimensions, and drilling or mortising may be needed. It is the only honest fitting warning on this shelf | Both layers: a mechanical key and a USB-C emergency power input, with low-battery alerts before either is needed. The battery is rechargeable and no runtime figure is published | Eight ways in, named: 3D face recognition, palm vein, fingerprint, passcode, key card, app, mechanical key and remote unlock. It is the widest credential set on this shelf |
| WYZE WPLCK1 Palm Lock, palm vein recognition, dual battery | $130 | Not published. No door thickness range and no bore size appears, where five locks on this shelf publish one | Four layers, stated: a 6-month main battery, a 2-week secondary battery that takes over when it drains, an integrated USB-C port that accepts any power bank for an emergency charge, and a mechanical key behind a sliding damping cover. This shelf's introduction says the question that should decide the purchase is what happens at zero battery; nothing else on this shelf answers it in four stages | Palm vein, keypad code, app, Alexa or Google voice, the live feed of a Wyze video doorbell, and a mechanical key. Up to 50 unique or one-time guest codes |
Details checked on October 8, 2026.
An unusually thick or thin door — anything from 40 to 120 mm (1.57 to 4.72 in) — that an ordinary deadbolt will not suit
Amazon reports what buyers took in the month before this page was last checked: at least 50.
The figure is a floor, rounded by Amazon, and read through Keepa — it says what buyers picked, not what a maker claims.
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.
Matter over Thread · Apple Home Key · rechargeable Li-ion, 6 months stated · no drilling
A retrofit lock with native Matter over Thread, so it joins Apple Home, Google Home and Alexa without a vendor bridge. Aqara states Apple Home Key support, a rechargeable battery quoted at up to six months, and a quiet unlocking mode.
Best for: A household already running Matter or Apple Home, that wants the lock to be part of it rather than another app.
Retrofit · built-in Wi-Fi, no bridge · Matter over Thread · charged at the door · months per charge
Nuki's fifth-generation lock puts Wi-Fi inside the unit, so remote access needs no bridge or hub, and adds Matter alongside Bluetooth. The battery charges at the door with the supplied cable rather than coming off it.
Best for: A household that wants remote access without adding another box to the hallway.
Retrofit · fingerprint, app and Bluetooth · magnetic auto-lock · 6 cells · no drilling
A retrofit lock that mounts over an existing cylinder with no drilling and no cylinder change. Signstek states fingerprint, app and Bluetooth access, magnetic auto-locking, and six batteries; the existing key still works from outside.
Best for: A first smart lock, and particularly a rented apartment where nothing may be altered.
