
Non-Contact Detection: Uses electromagnetic fields, light, sound, or other means to detect objects.
Types: Includes inductive (for metal objects), capacitive (for various materials), ultrasonic (using sound waves), and photoelectric (using light).
Applications: Widely used in automation, manufacturing, security systems, and mobile devices.
Advantages: Longer service life due to lack of physical contact, high-speed response, and excellent chemical resistance.
Limitations: Can be affected by ambient temperatures, surrounding objects, and other sensors.

