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Why modify a SPDT into either a single pole normally open OR SPST normally closed switch?
SPST: Single Pole, Single Throw. or 1P1T
SPDT: single pole, double throw. or 1P2T
N.C. : Normally Closed (normally ON)
Eg. Push to turn OFF.
N.O.: Normally Open (normally OFF)
Eg. Push to turn ON.
Watch this short video for better understanding or let me know otherwise.





