This VL1A-FQ40-15NC-AC/DCSM12 is an inductive proximity sensor with a Q40 mm PBT with a Flush mounting design. It has a plastic body length of 65*40*40mm and is 2 Wire , AC/DC, NC, with a sensing distance of 15 mm and an M12, 4 pins connector. 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.