[Multi-point control] Multi-point control can be done, the control switch can be determined according to the liquid level position. [Reed switch] With reed switch, no separate power supply is required. [High performance] Lightweight, simple working principle and high reliability. High reliability, easy to install, the junction box protection grade is above IP-65. [Stainless Steel Material] The material is stainless steel SUS304, can be used in high temperature and high pressure places, suitable for different density, different acid and alkali, different pressure and temperature. [Application] The switch is suitable for automobiles, industrial equipment, agricultural equipment, household appliances, etc.