These Inductive Sensors come with a 50mm Stainless Steel housing, have nominal sensing distances of 2, 5 or 10mm and can detect any type of ferromagnetic material. All sensors have short circuit and reverse polarity protection and come with 3 wire NPN-NA or PNP-NA output configurations. They have a protection rating of IP66, IP67, IP68 or IP69K and can operate in a temperature range of -25°C to +120°C. Contact Norstat for additional information, pricing, and availability.