Model IPH inductive proximity sensors for conductive metal objects include an 18 mm switch in shielded configuration. They can be supplied to operate on dc or ac voltages with either normally open or closed output switching. The dc units are available in NPN or PNP switching configurations of 10–30 Vdc. The ac voltage versions operate on 20–250 Vac. The device offers a chrome-plated brass body with PBT plastic face.