This VL1C-F18N-08NC-SM12 is an inductive proximity sensor with a M18 mm Nickel plated brass body with a flush mounting design. It has a metal body length of 48 mm and is NPN-NC, with a sensing distance of 8 mm and M12 , 4 pin connector. It has a power supply of 10-30 VDC and protection rating of IP67. This highly durable sensor is perfect for Industrial Automation applications.