Product Description Features: *Labeled for easy identification: Each rotary switch comes with a clearly labeled part number, making it easy for users to identify the right switch for their for Century single and two speed two chamber pump motors or fixed switches for conventional for A.O for SMITH pump motors. *Compatible with multiple pump motors: These rotary switches are designed to work seamlesslywith for Century single and two speed two chamber pump motors as well as conventional for A.O fo