The part designation E2B-M30LN20-M1-C2 is an Omron photoelectric sensor model. This model features a black housing, an M30 thread size, a PNP output type, and a detection distance of 20 m. It is also sealed against water and dust (IP67 protection) which makes it suitable for use in harsh environments. Additionally, it supports both dark/light-on and light/dark-on operation modes, perfect for a variety of applications.