The E3FA-LN11 2M from Omron Automation and Safety is a reflective photoelectric optical sensor with a 3.937" (100 mm) sensing range and NPN output, selectable between Dark-ON and Light-ON.
The E3FA-LN21 from Omron Automation and Safety is a reflective photoelectric optical sensor with a 3.937" (100 mm) sensing range and NPN output, selectable between Dark-ON and Light-ON.
The E3FA-LN12 2M from Omron Automation and Safety is a reflective optical sensor with a 200 mm (7.874") range, NPN output, selectable dark-ON/light-ON.