Smart door locks that fit the lock body already in your door
King Mag builds face-recognition, fingerprint and deadbolt smart locks in Zhongshan, Guangdong. Send a photo of your door edge and the lock body you use today. We reply with the model that fits, and the quotation follows on WhatsApp.

- 3D face camera
- Backlit keypad
- Fingerprint sensor in the handle
- Indoor display
- Indoor thumb-turn
Start with your door, not the catalogue
Pick the door you are fitting. You see the lock body it takes and the models built on that body. We always confirm the match from photos before you order.
Lock body5050
Interior and entrance doors made of wood.
Wooden doors take a narrower body than steel ones. The B6 and B36 handle locks sit on a 5050 body built to resist prying, pulling and sawing, with a Class C cylinder.
We need: Door thickness and a photo of the door edge.
Lock body68
Mortise body, the base of most of our range.
The dual-screen face-recognition locks, the CNC premium series and the B7 / T6S handle locks all use the 68 body. On request the rear lock can be changed to 6085, 6090 or 5072.
We need: Door thickness, the body you have now and which side the door opens.
Lock body85
Thermal-break aluminium and similar frames.
Aluminium-frame doors need a different body. Our 85 body models (B33, B35, B37, B38, B41S, B46, B46F, B59F) are available on request, so send photos of the door profile first.
We need: Photos of the door profile and the existing faceplate.
Lock bodyDeadbolt
Single-tongue body, American style.
The D3 is a smart deadbolt for doors 35-50 mm thick. It replaces ball locks and old deadbolts: fingerprint, password, IC card, Bluetooth app and key. Thicker doors on request.
We need: Door thickness and a photo of the current hole layout.
Six models to start from
Fourteen models in five series are online. These six show the range: face recognition, palm vein, CNC premium, wooden-door, handle and deadbolt.

A60S Dual-Screen Face Recognition Smart Lock
A60S is a fully automatic dual-screen smart door lock in aluminum alloy. AI 3D face recognition, fingerprint, password, card and app unlock, a 4.5-inch indoor screen and an outdoor camera with video call to your phone.
View details
HP-01 Palm Vein and 3D Face Recognition Smart Lock
HP-01 is a fully automatic smart lock with 3D structured-light face recognition, palm vein recognition, 0.5-second fingerprint unlock, visual video call and an infrared fill light. Available in five colours with a 4200 mAh lithium battery.
View details
AC38S CNC-Engraved Smart Lock with Aluminum Alloy Panel
AC38S is a CNC-engraved dual-screen smart lock with an aluminum alloy panel. AI 3D face recognition, fingerprint, password, card and app unlock, with video doorbell and AI cat-eye.
View details
B36 Fingerprint Smart Lock for Wooden Doors, Zinc Alloy
B36 is a zinc alloy smart lock for wooden doors with semiconductor fingerprint, password, magnetic card, key, phone and remote unlock. 5050 lock body, Class C cylinder and four AA batteries.
View details
B7 Fingerprint Handle Smart Lock
B7 is a one-grip fingerprint handle smart lock with semiconductor fingerprint, virtual password, card, key and Wi-Fi app unlock. 68 lock body, aluminum housing, black or red bronze.
View details
D3 Smart Deadbolt Lock with Fingerprint and Keypad
D3 is an American-style smart deadbolt for apartment, office and rental doors. Fingerprint, keypad password, IC card, Bluetooth app and key unlock with auto-lock, for door thickness 35-50 mm.
View detailsLock bodies differ by market
What is standard on a door in Hamburg is not what is standard in Moscow or Dallas. Short guides to what each market typically uses, and which of our models fit.
Europe
euro cylinderEuro-profile cylinders and mortise bodies.
Read the guide →Russia & CIS
85 mm centre distanceSteel entrance doors and wooden interior doors.
Read the guide →North America
backset 2-3/8 · 2-3/4Deadbolts, rentals and the D3.
Read the guide →Middle East
steel · hot climateApartment doors and villas.
Read the guide →China & Asia
6068 · aluminium · glassThermal-break aluminium and glass doors.
Read the guide →Numbers, not adjectives
Every model page carries a table like this one. This is the A60S, copied from its spec sheet. If a number you need is missing, ask and we will answer in writing.
- Model
- A60S, aluminium alloy, black
- Panels (out / in)
- 432 × 76 mm / 407 × 73 mm
- Memory
- Face 50 · fingerprint 50 · card 200 · password 200
- Network
- Wi-Fi 2.4 GHz, Tuya app
- Battery
- 4200 mAh rechargeable, Type-C emergency power
- Fingerprint temperature
- -20 to 55 °C
- Lock body
- 68 · rear lock 6085 / 6090 / 5072 on request
- Standard on sheet
- GA374-2019
- Packing
- 6 sets per carton, 49.5 × 34.5 × 52.5 cm
Where the locks are assembled
Photos from our own production floor: wiring and final assembly stations, component shelves and finished locks waiting to be boxed.
- Boxed by the carton: 6 sets for the dual-screen and CNC series, 10 for B6, B36 and B7
- Logo, language, app platform, colour and box can be customised
- CE and RoHS certificates on request






Four steps from photo to shipment
Send the door
A photo of the door edge and your current lock, plus market and quantity.
We match
We reply with a model, the lock body and the options that fit.
Sample and OEM setup
A sample goes out. Logo, language, app platform, colour and box are confirmed.
Batch and shipping
Batch production, carton packing and shipment to your port.
Read before you order
Plain answers on lock bodies, apps, doors, OEM orders and installation.

How to Choose a Smart Door Lock: 9 Factors Buyers Should Check
Door type, lock body, unlock methods, app platform, battery, cylinder grade and support: nine checks that prevent wrong orders when you buy smart door locks in…

Smart Lock Body Types Explained: 68, 85, 5050 and Single-Tongue Bodies
What the numbers on a lock body mean, which doors use which body, and how to confirm that a smart lock fits before you place an…

How to Photograph Your Door and Lock Body So a Supplier Can Confirm Smart Lock Fit
Six photos and five measurements are enough for a supplier to match a smart lock to your door. Follow this checklist and send it on WhatsApp.
Questions buyers ask first
Do you work with distributors and installers or only brands?
We supply distributors, brands, installers and project buyers. Message us on WhatsApp with your market and quantity and we will explain sample options and ordering terms.
Can you customise the logo, language and app platform?
Yes. OEM / ODM options include logo and packaging, interface language (up to 23 languages on supported versions), colour and the app platform: Tuya as standard, with TTLock and Matter versions on selected models.
Which lock bodies do your smart locks use?
Fully automatic and handle models use the 68 lock body, with 6085, 6090 and 5072 rear-lock options on selected models. Wooden-door locks use a 5050 body, aluminium-frame models an 85 body, and deadbolts a single-tongue body. See our lock body compatibility guide.
Where are your prices?
We do not publish prices. Prices depend on model, version, language, platform and quantity, so we quote on request through WhatsApp.
Do you have CE and RoHS certificates?
CE and RoHS certificates are available on request. Tell us the model and we will send the certificate copy.
How long does a typical order take?
Lead time depends on the model, customisation and quantity. We confirm production time and shipping options in the quotation.
Need prices, samples or OEM details?
Message Mag on WhatsApp. We reply with specifications, MOQ, lead time and a quotation.