1、Excellent ABS Material: This water tank control switch is made of excellent ABS material, which is non toxic and environment friendly, durable and not easy to be damaged. 2、Coarse Copper Wire: This ball float switch is made of coarse copper wire with good conductivity, insulated protective sleeve, good insulation and strong resistance to cold, heat and aging. 3、Multifunctional: This sump pump float switch is multifunctional, which can effectively protect the wire core, change the switch submersible pump can be automatically adjusted and the assembly is simple and reasonable. 4、Good Performance: This water level control switch uses the principle of gravity and is sealed with polypropylene for a high degree of sealing and simple, delicate operation. 5、Wide Application: This sump pump universal float switch has a wide range of applications and can be used in pools, tanks and water towers.