Versatile and highly sensitive, Contrinex photoelectric sensors deliver long-distance, non-contact detection of metallic and non-metallic targets, accommodating variable target color and surface finish. High-frequency switching circuitry senses small, fast-moving objects, even against non-contrasting backgrounds. Photoelectric sensors direct light beams – emitted by a laser diode or LED – toward a distant target. Different operating principles detect either light reflected from the target (energetic-diffuse and background-suppression sensors) or the interruption of the beam by the target (reflex and through-beam sensors). Through-beam sensors utilize a separate receiver, allowing longer sensing distances. Other variants contain a transmitter and a receiver in a single housing. Conveying the light beam into confined spaces using optical fibers eliminates any electrical hazard at the sensing point, ideal for flammable atmospheres.

Product Ranges

Standard sensors

Contrinex Standard photoelectric sensors are ideal for general position- and presence-detection in almost...

Miniature sensors

The Contrinex Miniature range packs exceptional position- and presence-sensing performance into the smallest...

Distance sensors

As contactless measurement devices, photoelectric Distance sensors are suitable for numerous areas of...

Light grids

The use of infrared light grids for non-contact measurement offers many advantages, including...

Key Products


Contrinex sensors are available in all commonly used cubic and cylindrical housing dimensions....