Variable reluctance linear position sensors and switches are noncontact devices that use variable reluctance based technology, and whose output signal represents the distance between an object and a reference point.

Magnetic speed sensors rely on a magnet as the sensing element or sensed target to capture rotational or linear speed. They are typically used as gear tooth speed sensors or incorporated into stroboscopes or tachometers.

Photoelectric sensors use emitters and receivers to detect the presence, absence, or distance of target objects.

Capacitive proximity sensors detect the presence or proximity of a target using capacitive technology.

Eddy current proximity sensors and switches detect the proximity or presence of a target by sensing the magnetic fields generated by a reference coil.

Inductive proximity sensors detect the presence or absence of an object using a critical distance.

Ultrasonic proximity sensors use reflected or transmitted ultrasonic waves to detect the presence or absence of a target component.