Balluff BCS M30B4I2-POC15D-S04K Capacitive Sensor, 2-15 mm Range, 30 x 79 mm, IP67

Capacitive sensors for object detection feature a straight-line electrical field. They detect both solid bodies, such as wafers, PCBs, cartons, paper stacks, bottles, plastic blocks and plates, and liquids through container walls or glass or plastic tubes (thickness max. 4 mm).