Rocker
Switch used for activating High and Low Speed on 120V pumps, with the
Hi-Lo arrangement for 2-speed spa pumps, with no off position, or it can
be used to control two devices on the same switch with one device
always on unless the other device is on instead. SPDT, Single Pole,
Double Throw, 3 terminal rocker switch is used for 2-Speed Spa Pumps,
but can also be used to connect two devices on the same switch, such as
circ pump and blower, or ozone or lighting.