Domestic customers and distributors are also well aware of the benefits that PNP / NPN proximity sensors bring. These sensors have moving parts in the detection mechanism. First of all, this will hit safety by removing these components from what moves/senses them(objective 1/filter N.v3). This not only reduces the chances of accidents but also reduces maintenance since then there is less wear. Second, they increase productivity. These sensors can seamlessly share the real-time data to robots and machines for process optimization without any hassle. Third, there are no maintenance requirements and costs since physical contact is not required for detection. Moreover, the foolproof design secures permanent existence in harsh environments. Finally, by making the choice between PNP and NPN simple customers can choose a sensor that fits their electrical needs perfectly as well as control requirements. That is convenient and more practical for this purpose