Sci r13 57a 05yl 05a pushbutton switch yellow 2p spst off on
Sci r13 57a 05 series 05a spst momentary push button switches sci r13 57a 05yl a 05a spst push button switch with momentary action the switch is normally open and is closed only when the yellow button is held down opening again when the button is released sci r13 57a 05yl 05a pushbutton switch yellow 2p spst off on