PS Pushbutton Switches C&K Switches PS Pushbutton Switches feature 4.5mm travel and a latching pushbutton. These single-pole, double-throw (SPDT) switches change the electrical state on the downstroke of the plunger and deliver 'on-off' or 'on-on' functionality. They are designed to work with standard male commercial pin and socket connectors. Typical applications for C&K Switches PS Pushbutton Switches include automotive interior lighting, computer peripherals, and appliances.