Elevator Lock Button With Key 30mm Size

The numbers 2, 0, and 1 on the elevator lock button can have various meanings. Here are some common scenarios:
Explanation of OTIS elevator address settings: In OTIS elevator systems, the address is set by the dial switch on the communication board. For example, in the ladder lock switch system, the settings are "0 58 1". Here, "0" indicates that this switch is a normally open switch; "58" indicates the address, which is reached by switching switches 2, 4, 5, and 6 to the on direction (since 2 + 8 + 16 + 32 = 58), and the rest of the switches to the off direction. "1" indicates that the switch is in position P1. If "2" appears here, it may be the value corresponding to a certain dial switch related to address calculation. For example, switch 3 represents the value 4, so "2" may indicate that the switch is off because its value is not included in the address value. But this explanation is usually more professional and specific to certain elevator models.

Representing different function states (specific brand elevator): In some elevator brands, "0" and "1" may represent the closed and opened states of the elevator lock function. For example, with Thyssen Elevators, when the lock button on the elevator control panel shows "0", it indicates that the elevator's lock function is off and the elevator can operate normally. When it shows "1", it indicates that the elevator's lock function is on and the elevator is fixed at the current floor. However, it is usually less common to see the "2" representing the regular function status. It might be that "2" is reserved for special function codes or part of the fault codes in this brand of elevators.