This VL1M-NF12N-04NC-3LM12 is an inductive proximity sensor with a M12 full stainless steel body with a Non Flush mounting design. It has a full stainless steel body length of 68 mm and is NPN-NC, with a sensing distance of 4 mm and M12 , 4 pins male type 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.