How to change the manager lock combination of the digital lock?

You can simply change the manager lock combination of you digital lock by following these steps:

1. Press OK + 1 + OK (green light will blink fast) 
2. Enter the old manager code and press OK (green light will blink slowly) 
3. Enter the new manager code from 4-8 digits and press OK 
4. Enter the new manager code again to confirm and press OK (green light blinks once and will turn off) 
5. The new manager code is changed successfully 

→ Check the 62 seconds of the single self-closing door movie and see how it works.