2-stage function
Enabling function is active in the second stage (pressed position). When the button is released, the enabling is removed (see function sequence).
3-stage function
Enabling function is only active in the second stage (middle position, actuating point). If the button is released or pushed further (panic function), the enabling is removed (dependent on the wiring, see function sequence).
Switching elements
20 1 NO
111 1 NO+1 NCpositive opening+1 NC
121 1 NO+2 NCpositive opening+1 NC
210 2 NO+1 NCpositive opening
220 2 NO+2 NCpositive opening
2202 2 NO/NC