Detecting the opening of mobile protective doors on potentially dangerous machinery and triggering a safety alarm, EPINUS contactless switch provides high reliability and long life with a strong metallic latching ability and operates at temperatures of -13°F to 194°F. This switch comes in food grade housings for food and pharmaceuticals processing. This device is designed for up to 100 million operations. Response time is 1 ms and closing force is 4.4 lb.