Features: The stainless steel double ball float switcher features high sensitivity contacts and corrosion resistant construction for precise water level control in tanks and pools. Double floating body enable accurate liquid level management, requiring small integration to safely operate pumps and prevent frequent cycling. Ideal for homeowners, aquaculture enthusiasts, and industrial maintenance team needing reliable automatic water level regulation solution. Perfect for monitoring drainage/refill cycles in residential water tanks, commercial pools, aquariums systems, and agricultural irrigation reservoirs. Adjustable floating body length accommodates various container depths while maintaining durability stainless steel performances in continuous submergeds applications. Specifications: Component:Stainless Steel Option Length:Approx.150mm/5.91inch, 200mm/7.87inch, 250mm/9.84inch Voltages:0-220V Package Includes: 1pc Float Switcher note: Please allow 1-2cm errors due to manual measurement. Due to the differences between different monitors, the picture may not reflect the actual item color.