872C-N12BN18-FD05 - Proximity Sensor, 4-Wire DC Extended Range Complementary Output, 18mm Diameter, Tubular:Nickel Plated BrassRectangular, Standard, 12mm Sensing Distance, Unshielded, Complementary N.O. & N.C., NPN, Pigtail (short cable with connector)

872C-N12BN18-FD05 - Proximity Sensor, 4-Wire DC Extended Range Complementary Output, 18mm Diameter, Tubular:Nickel Plated BrassRectangular, Standard, 12mm Sensing Distance, Unshielded, Complementary N.O. & N.C., NPN, Pigtail (short cable with connector)