AutomationDirect's line of round bodied stainless steel inductive proximity sensors now include 3-wire NPN output versions in 8, 12, 18 and 30 mm models; also new are unshielded 3-wire 12, 18 and 30 mm models. All models have a full 316L stainless steel barrel and sensing face that provides extreme durability in harsh environments, with standard quick-disconnect cable connections. Starting at $45, all units are cULus, CE and RoHS rated and have a limited lifetime warranty.