Float level switch technology is for free float switch malfunction occurred bellows, springs, seals and other components. Instead of using the internal magnet direct drive switch float, float switch lever enables simple switching instant action. The float arm angle limit designed to prevent the float vertically. Float level switch is a simple, easy to use, safe and reliable liquid level controller. It is faster than the average speed of a mechanical switch, long working life; compared with electronic switches, which have strong anti-shock load characteristics of a product can achieve multi-point control. Its shipbuilding, paper, printing, generating equipment, petrochemical industry, food industry, water treatment, electrical, industrial dyes, hydraulic machinery and other aspects have been widely used. Float switch is a simple, easy to use, safe and reliable level control device, which has a smaller volume than mechanical switches, speed, long life effect, compared with the electronic switch, which has a strong anti-shock load capability characteristics.