NIVOSWITCH R−200/300 vibrating fork level switches, featuring diverging vibrating forks, are engineered for precise detection of granular or powdered solids levels. Whether mounted on silos or bins, these switches effectively control filling and emptying processes, offering fail-safe alarms for overfill protection. Operating on the principle of electronic circuit-induced vibration in the fork probe, the fork's vibration changes or stops as the medium covers it. Once the medium recedes, the fork resumes vibrating freely, triggering the electronics to sense the vibration change and provide an output signal after a set delay. PNP/NPN transistor output versions allow direct connection to PLCs or relay units. Certain types of NIVOSWITCH vibrating forks can handle high-current loads with UNICONT PKK switching amplifiers.