The SP-KSM replaces
the standard 3-position key switch (The SP-KSM replaces the standard
3-position key switch (KS-3) where a momentary (spring-loaded) action is
required. It combines the directional functions (Up and Down) with the
security of a key switch. Use for low voltage contact closure or
multiple switching. This switch is necessary to access the service
position of the scissor lifts.