The inductive proximity switch is a metal object detector and an important part of industrial automation. This device is based on the principle in effect at many other locations: that when an alternating magnetic field passes through a quasi- conductive object situated close enough, it creates voltage. The few applications of an inductive prox switch are, for example, to find out if there is anything and especially how many objects have gone by him. The solid-state reliability and rapid response time of the sensor also adds to its worth since it can operate efficiently in demanding environments. Common applications of such sensors include those in manufacturing (for inspecting a metal surface is painted the right way before exit); industrial robotics; automotive and aerospace, air-conditioned BIO SENSORS. Critical, location-specific metal detection: In Material handling areas where positions are critically defined--where metallic dust and isolated metals in the raw material can play a