Traditional operation activated by a float switch or panel switch. New for 2002 is Rule's Cartridge Series of Bilge Pumps. These are no-automatic pumps with the added feature of replacement motors. This feature allows you to carry a spare motor, providing an extra level of security and protection. Removal of the motor also cleaning of the strainer and impeller area in the event that the pump becomes clogged. Replacement motors are sold separately.