The E2B-S08KN04-MC-C1 is a Proximity Sensor manufactured by Omron. It is a Double M8 Short M8 CN NPN NO, which means that it has two M8 connector type proximity sensors configured in a short M8 CN series. The NPN NO indicates that it is an NPN type transistor, which is a type of transistor with three pins, and the NO indicates that it is configured to open, or turn OFF, when it detects a signal. This Proximity Sensor is typically used in automated machinery and robotics to detect the presence of an object.