I.S. Photoelectric Proximity Sensors - Retroflective

The following are NAMUR intrinsically safe sensors and are powered by a Digital Input Barrier which may be selected by clicking on any link for Digital Input Barrier.
Retroflective sensors are also manufactured with a light emitter and receiver in one unit. However, they operate by establishing a light beam between the sensor and a special reflector positioned opposite the sensor. If the light beam is broken, the sensor switch operates.  If the objects to be sensed are highly reflective then a polarised retroflective sensor should be used. 
Don't forget to order the plug and lead (cordset) also if ordering a sensor with a connector.