The Guided float switch is designed for economical control of liquids in tanks. The switch is remarkable for its maintenance-free compact design and reed contacts with high switch capacity. It can easily be installed in water applications as well as in chemical applications. The encapsulated reed contact is operated by the magnet. The switching function (N/O contact/N/C contact) is determined by the installation position. The switching function is reserved by simply rotating the switch through 180 °.