The SLK-F-UC-55-R2-A0-L0-0 from Bernstein is a safety switch with bolting, SLK, NC and NO function, an IP67 dust and water protection rating, and an electrical connection of M20. It is designed to offer reliable control in the wide range of applications such as machines, assembly lines, and hazardous areas. The switch has a red LED indication, adjustable via 2-position key, and an enclosed housing to protect against dust and foreign particles. It is vibration and shock-resistant and can withstand temperatures from -25°C up to +60°C.