product :1. Long lifespan, up to 100,000 switching times; self-contained installation card holder, providing bottom and side installation methods;2. Automatically turn on when the horizontal plane is greater than or equal to 55mm; automatically disconnectwhen it is less than or equal to 25mm; and can adapt to the positioning requirements of different liquid level heights by increasing/decreasing the thickness of the underlying material of the mounting base;3. It is connected by high-quality coppercable with a diameter of 3.5mm (the diameter of the inner copper wire is up to 2mm) to ensure that it can work normally even if a large current of up to 30A passes through;4. Ultrasonic welding is adopted, and the sealing is formed at one time, whichis reliable and safe, and will not leak;5. The shell is made of high-quality ABS material, and the internal metal contacts ensure reliable start/stop;6. With the water pump, it can form an automatic stop/start system to avoid the water pump idling,dry running and burning or causing failure; it can realize automatic duty, without manual time-consuming and laborious guarding.Working voltage 12V 24V 36V (V)Working current 30A (A)