Very well done

It is a security system that requires the entry of a certain code (you simply have to name the timer blocks zahl1-zahl4 (zahl = german for number)) accordingly (you have to press all four input timer blocks to execute whatever you want). Zahl1, Zahl2, Zahl3 and Zahl4 always remains in the same order.
For example if you rename Zahl1 to 4, rename Zahl2 to 1, Zahl3 to 2 and Zahl4 to 3 would be the code be 4123 (you only have to change the arrangement of the timer blocks on the buttons).

What does this do?