Capacitive sensors utilize a non-contact sensing technology that detects a wide variety of materials. These sensors make use of a compensation electrode, and most come with sensitivity adjustments that allow a designer to tune out certain materials such as glass or plastic, making this type of sensor a common choice for point level applications. One of the major benefits of capacitive sensors is their ability to sense through low-dielectric materials. With the sensitivity properly adjusted, these sensors can be used to "see through" an object wall to detect its contents. In addition, capacitive sensors have the ability to sense most materials including wood, plastics, cardboard, glass, grain, all metals and most fluids.