The different function of the doors lock

- Feb 08, 2019-

How many functions of lock do you know? A lock can not only be used at entrance, let's learn more about the doors lock.     


The Entrance function ( With key):

Entrance function, which is also known as "ET function". It is the most popular function of lock.


Bathroom function (without key):

Bathroom function, which is also known as "privacy function" and "BK function". A lock can be used as bathroom lock without key hole nor key, usually there is a small hole for opening by a coin in case of emergency.


Bathroom with indicator function (without the cylinder and key):

Bathroom with indicator function, which is also known as "privacy with indicator function" and "BL function". A lock can be used as bathroom lock without key hole nor key but with an indicator to show the bathroom is occupied or not, usually there is also a small hole for opening by a coin in case of emergency.


Passage function: (without the cylinder and key):

Passage function, which is also known as "PS function". A lock can be used to fix the door on passage without key hole nor key, usually the door can be opened at one side or both sides.


Dummy function (Without cylinder)

Dummy function, which is also known as "DM function". A lock can be used as a part of decoration, it is not a real lock, we only install its faceplate and backplate on the door to match interior decoration style.