18mm round capacitive sensors detect metal and non-metal objects through insulating materials such as wood or plastic, often used to sense fill levels of liquids or powders. These plastic-housed models, many with IP69K rating, offer a sensing distance of up to 15mm and a pushbutton teach function or potentiometer sensitivity adjustment for fast setup.
Capacitive proximity sensors allow sensing of metal and non-metal objects, even through non-metal containers.
CK1 Series capacitive proximity sensors are
CK2 Series capacitive proximity sensors are