Item Name: Accessories Yacht Boat Flow Sensor Electric Marine Float Switch Bilge Pump. Turn pump on when water level reaches 2" (51mm)-SFBS-20-01MarineRV & CampersTypical Applications:New mercury free float switch.Heavy duty flow switch is designed for the toughest applicationsIdeal flow sensor for bilge pumpsFeatures & Benefits:Suitable for use with 12v DC or 24v DC bilge pumps.Turn pump off when water level reaches 3/4" (19mm)-SFBS-20-01IndustrialProduct Description:1. Long lifespan, up to 100,000 switching times with installation card holder, providing bottom and side installation methods 2. Automatically turn on when the horizontal plane is greater than or equal to 55mm automatically disconnect when it is less than or equal to 25mm and can adapt to the positioning requirements of different liquid level heights by increasing/decreasing the thickness of the underlying material of the mounting base 3. It is connected by high-quality copper cable with a diameter of 3.5mm (the diameter of the inner copper wire is up to 2mm) to ensure that it can work normally even if a large current of up to 30A passes through 4. Welding is adopted, and the sealing is formed at one time, which is reliable and safe, and will not leak 5. The shell is made of high-quality ABS material, and the internal metal contacts ensure reliable start/stop 6. With the water pump, it can form an automatic stop/start system to avoid the water pump idling, dry running and burning or causing failure it can realize automatic duty, without manual time-consuming and laborious guarding.Package Include: 1 * Marine Bilge Pump Float Switch *Please make