A four-wire proximity sensor is necessary for business automation, and it lives as much as its precise detection of objects promise that the extended distance won't ever come into contact or intervene with reliable overall performance. This type of sensor works by expelling an electromagnetic field that changes by detecting another object within its range, which triggers a different reading for the already-expelled field. This sensor's key features are its ability to detect nothing, make or count things, position technology parameters such as: tough design for harsh environment conditions; any range you desire and Easy Installation and mating. The coatings are also key to expanding the reach of his faster pace of production processed automation, so he can make more quicker for people in new industries. Other uses are in manufacturing, box packaging and material handling industries where tasks can be too dangerous or lights-out for manual operation.