Features: * Brand new high quality * Made of high-quality materials, durable * Liquid level sensor stainless steel double ball floating switch tank * Tired of guessing how much water or fuel is left in the tank, you need this new liquid floating switch. * This small size, low-cost switch can be used in most liquid environments. By reversing the floating point, it can also easily change from normal on to normal off. * Floating switches cannot directly control solenoid valves or power relays, switches and contacts. Add a small relay (such as HH54P) transition. * Double-level floating switch can be used to control water tanks, ponds, water tanks, fish tanks (drainage or water), or perform upper and lower alarm switches. * Simple test solution: Step 1: Switch the multimeter to the buzzing gear, connect the double red line of the controller with the red and black terminal lines of the multimeter, move the float, and test whether the multimeter is buzzing. Step 1: Switch the multimeter to buzz mode, connect the double black lines of the controller with the red and black terminal lines of the multimeter respectively, move the buoy, and test whether the multimeter is buzzing. * If both are buzzing, it proves that the two floats are in good condition. * AC12V 24V 36V 110V 220V transitions through small relays (such as HH54P), which are universal (relays must be added, otherwise they will burn out). Specifications: Material: stainless steel sus304 Type: Double ball Length (optional): 100mm, 150mm, 200mm, 250mm, 300mm, 350mm, 400mm, 450mm, 500mm Cable length: 40 cm, floating body Material: stainless steel Color: as shown in the figure Quantity: 1 Package Included： 1 x floating switch stainless steel double ball Note: 1.The real color of the item may be slightly different from the pictures shown on website caused by many factors such as brightness of your monitor and light brightness. 2.Please allow slight manual measurement deviation for the data. Made of high quality material, durable and practical to use. Perfect functions,give you a wonderful experience. Every customer can enjoy 30 days refund or replacement for Damaged/Quality Issues. If you have any questions, please feel free to contact us, we will solve it for you. Liquid Water Level Sensor Stainless Steel Double Ball Float Switch Tank Pool