Smart Door Lock

Sliding Door Closer

Sliding Door Closer

Self-closing keeps door closed, without electricity need. It's easy and energy saved. Gaining the most by limited budget.

Transformable Locks

Transformable Locks

The interchangeable parts, make one lock work out extra models like Dummy, Switch, Cylinder and Indicator.


D&D Smart Door Lock Service Introduction

D&D BUILDERS HARDWARE CO. is Taiwan Smart Door Lock supplier and manufacturer with more than 14 years experence. Since 2002, in the Builder Hardware Industry, D&D has been offering our customers high quality Smart Door Lock production service. With both advanced technology and 14 years experience, D&D always make sure to meet each customer's demand.

Smart Door Lock


Virtual Smart Door Lock

Smart Door Lock - Smart Door Lock
Smart Door Lock

Keep all your locks at your fingertips anywhere you go, know who’s coming in to your home, and easily manage access to your premises at distance, the new highly-secured smart door lock designed for your smart home.


  • The smart door lock can be easily attached to the door without remodelling.
  • Open and close your door only with your smartphone application (Bluetooth).
  • Use your web browser to open the door remotely via wifi.
  • Add and delete an unlimited number of users.
  • See opening and closing records.
  • Manage apartment rentals or viewings remotely, without having to bother with key exchanges or handovers.


Smart Door Lock functions overview



Transmission method

Opening/closing the key from application

Opening/closing the key nearby with the application on an enabled smart phone.



Opening/closing the key from Web

Opening/closing the key nearby or from a distance with the Web browser of a computer or smartphone. In order to active Wifi, a knock on the door is necessary.




Opening/closing the key from the phone

Opening/closing the key nearby or from a distance by calling the free number from an enabled cell phone. In order to active Wifi, a knock on the door is necessary.




The automatic closing of the door after a preset number of seconds when the key is open.




The automatic unlocking of the key when an enabled smartphone is approaching. (This service is planning to start in April.)



Usage record

It is possible to check the record for when the key has been opened/closed by each user.



Transfering opening/closing rights

It is possible to transfer key opening/closing rights to other users with an invitation. Users that have been transferred usage rights can in turn invite further users with "Owner rights" and "Guest rights".



Setting time limit for usage rights

Beforehand setting the time for when invited guests can operate the key.



The Smartphone application is compatible with iOS7.1 or above and Android 4.3 or above.


Graphic Solution

Easily attached to any door in seconds!

Installation of smart door lock

Press Release