Make from PA nylon, with excellent wear resistance and impacts resistance, ensuring the stability and durability of the product in long terms use. Fully automatic water levels controlling technology is adopted to accurately senses water levels changes to ensuring the efficient operate of the water supply systems. Widely used at water tanks, reservoirs, fish tanks and other places where water levels is required, suitable for home decoration and industrial use. and can be completed without complex tools. The universals function is suitable for installation of various with different angles.