1.Warning: 1. The level switch has a control stroke of 10 mm and should be used in a clean water environment without dirt or floating objects. 2. The water level switch cannot be connected directly to a solenoid valve or a highperformance relay, AC or, etc., but must be used with a low power relay. 2.Wide application: the water level sensor is mainly made of 304 stainless steel, is corrosion resistant and temperature resistant up to 120 °C. The water level switch is extremely sensitive and can be widely used for level control, level indicator and overflow protection in automatic irrigation systems, domestic water tanks, industrial water towers, fish tanks, domestic sewage tanks, submersible pumps and so on. 3.Installation: the liquid level sensor is a device for level control with a simple structure that does not require power supply or complex circuits. Compared to conventional mechanical switches, the level sensor is smaller and has a longer life. If you need to control a large level difference, you can use two level switches combined (one long and one short install). 4.Working principle: Our float limit switch for liquid levels consists of a magnetic spring switch and a float with magnetic material inside. When the liquid level rises or falls, the magnetic material inside the float interacts with the magnetic spring switch to control and display the liquid level.