Float Switch for Boat Bilge Pump - High quality construction, sensible design, stable and practical - Provides a float switch solution for water tanks - Suitable for applications where reliable water level sensing and control are needed Water Level Control Relay Switch - Can be used to regulate tank water to control the water level - Compatible with two sump pump float switches - Helps automate water level management in tanks or reservoirs Float Switch for Water Tank - Fine craftsmanship, delicate form, good appearance - Includes a relay switch for water level regulation - Ideal for applications requiring reliable level sensing and automated control Automatic Water Level Control Switch - The float acts as a switch for liquid level in a tank, container, or configured setting - Includes a water level control relay switch - Provides automatic monitoring and control of fluid levels in various installations Use scenarios - Boat bilge systems and marine tanks requiring automatic level sensing and switch control - Residential or commercial water tanks that need automatic fill/stop and level regulation - Sump pump installations with dual float switches for redundancy or staged operation