Sonar proximity switches sense objects of varying materials, shapes, colors or consistencies with absolute precision, flexibility and reliability. The application potential is almost unlimited. Whether recording fill levels or heights, measuring distances or counting bottles, our switches recognize objects with a wide range of properties from a distance of 3 cm to 10 m, regardless whether they are liquid, solid, powdery or even transparent. Surface conditions are irrelevant as well - they can be rough or smooth, clean or dirty, wet or dry. Siemens proximity switches feature maximum ruggedness and resistance against dirt, vibration and extraneous light or sound.