This VL1A-NF18-08NC-AC/DCSM12 is an inductive proximity sensor with a M18 mm Nickel plated brass body with a Non Flush mounting design. It has a metal body length of 53mm and is 2 Wire , AC/DC, NC, with a sensing distance of 8 mm and an M12 Connector , 4 pins , Male type. It has a power supply of 20~250V AC/DC and protection rating of IP67. This highly durable sensor is perfect for Industrial Automation applications.