2013 Smart mechanical combination lock for safe

Specifications

Specification                                                       

Model:  NF20A

chanical password lock
2.no battery password lock
3.open password lock by code or metal key
4.manufacture password lock

Features                                                               

1. Energy-conserving and environment-protective without power supply.

2. Change the code at will ,which is easy to operate

3. Free mechanical structure to avoid the hand touch and voice identification.

4. Precision machinofacture, which supply either the code  to open the door.

5. It is the security numen of hotel, home and house, apartment, factory and office.

Function Synopsis                                              

Keystroke function:

14 buttons, including 10 number keystroke and 4 letter keystroke.

Special key—button “C”, eliminate misinput, easily use.
Numeral key—choose 4-7buttons to set the password in 13 keystroke except button “C”.

Change code function:

basic on the customers’ need,

one should change password,7buttons most one time, but not overlap.

Security function:

Exactitude design, preciseness structure, mechanism motion.

With strict trial ,it can still work normally after 50000 times opening.

Possess security and secrecy.

Applying function:

Fit for every opening direction and locale, high adaption ability.

Often use at home door, garage door, office, classroom, storeroom, dormitory, safety box and so on.