SEAFLO Boat Marine Bilge Pump Float Switch Automatic 12V 24V 32V DC Long life, switching frequency up to 10 million times;Ultrasonic welding, forming a seal, reliable and secure, not leaking Turn pump on when water level reaches 2" (51mm) ; Turn pump off when water level reaches 3/4"(19mm) Ignition protection; Removable snap-on base for easy fitting, servicing and cleaning Silent and vibration-less operation To all existing safety standards ( CE, ROHS, ISO9001:2008 Approved)