what is SPDT switch


The ND-Series RX,  the L-Series RX and latch monitoring switches are Form C - Single Pole Double Throw (also known as SPDT).
RX SPDT Switch, RX
LX Feature, Internal SPDT Switch
Two separate SPDT switches that monitor the state of the Push pad
The DS is Dual Monitor Switch for Von Duprin 6000 series electric strikes. DS option cannot be added to a Von Duprin 6000 series electric strikes in the field. It is only available factory inst...