A retroreflective sensor is a type of photoelectric sensor that uses the interruption of a reflected light beam to detect objects. The transmitter and receiver are housed together in a single unit. The emitted light beam is reflected by a retroreflector back to the sensor. When an object is placed between the sensor and the reflector, it interrupts the light beam. The absence of the light beam causes the sensor to change its output signal. Whatever your application, Datavision offers you a wide range of retro reflective photoelectric sensors that enable you to reliably detect objects regardless of their surface, color, and material.