Note: 
A. Suitable for the doors which trepanning size is 55- 60mm
B. Doors fit:35mm To 55mm thick
C.It fits most pre-drilled 2-3/8'' (60mm) or 2-3/4'' (70mm,by request)backset knob-lock doors or other similar doors.

Product Description:

Digital Keyless Password Door Lock with backup Keys
It is suitable for entrance /bathroom /passage /medium grade commercial office /school /heavy duty residential projects.
And this password/combination door lock offers great convenience of reliable keyless access by code. User can setup ten different password/ codes for access, each code can be set from 1 to 13 digits. If needed, move the key cover and user can still use the backup keys included in the package to open the lock.

Features:

Used For Wooden Door Or Aluminium Door.
2 kinds of codes (Master code and user code).
Can store 10 groups of different codes.
Alarm when the voltage of battery is low.
Can connect with outside power when there is no battery or the battery is used up.
Alarm if error code is entered for 5 times continuously.
Can be supplied by outside power.

Specifications:

Product Dimensions: 9.5*7*7inch
Item Weight: 3.8pounds
Material: Zinc Alloy 
Battery: DC 6V Or 4X1.5V AAA 
Some Screws& Nuts,& Washers

Caution:
Each time to input code and unlock, need to till the indicators off.
Please read the instruction thoroughly before you install and use the lock.
Please retain this manual for future reference.