The options when specifying sensors for long-range object detection or positioning usually boil down to two alternatives: optical sensors using either infrared or visible-red light and ultrasonic.

10 to 30V dc supply voltage with NPN or PNP output, depending on model. Available in opposed, polarized and non-polarized retroreflective, convergent, regular and wide-angle diffuse, and glass or ...

The usual way of detecting objects of varying shapes, heights, or positions has been through the use of an array of single-beam photoelectric sensors or a thru-beam light grid: a photoelectric array ...

Fiber optic proximity sensors are used to detect the proximity of target objects using light. Light is supplied and returned via fiber optic cables. Fiber optic cables can fit in small spaces, are not ...