Features Versatile Range of Models: Available in a diverse selection of models, our stainless steel double ball float switch caters to various pool tank sizes, shapes, and operational requirements, offering tailored solutions for every need. Visually Apparent Feedback: The water level controller sensor switch provides a highly visible and direct indication of water levels, allowing for immediate and accurate monitoring. This ensures that pool owners can quickly adjust water levels as needed. Premium Materaials: The water level controller sensor switch is crafted from high-quality stainless steel, ensuring durability and long-lasting performance even in harsh aquatic environments. User-Friendly Design: Designed with compactness in mind, the water level sensor is easy to install and maintain. Its intuitive operation makes water level switch accessible for both professionals and enthusiasts. Widespread Applications: Due to double ball level sensor's reliability, durability, and versatility, the stainless steel float switch finds extensive use not only in residential pools but also in commercial pools, water features, spas, and irrigation systems. Specification: Features: The float switch cannot directly control solenoid valves or high-power relays, AC contactors, etc.A small relay(like HH54P) is needed for transition. The double float switch can be used to control the liquid level of the water tank, pool, sink, fish tank, etc. (drain or water), or to make the upper and lower alarm switch of the liquid level. The contacts inside are made of a reed switch with very high sensitivity. The action range of the two floats of the double float switch is 10 mm. If the demand control range is large, two float switch combinations can be used, so that there is a large stroke to ensure that the pump does not start frequently. Normal water intake process activated by the float switch below, and the float switch above stops working. The drain is activated by the float switch above and the lower float switch stops working. Specification: Material:304 Stainless Steel 100mm / 3.94in 150mm / 5.91in 200mm / 7.87in 250mm / 9.84in Package List: 1 x Double Ball Float Switch Package List