The EE-SX1042 is an industrial-grade optical switch manufactured by Omron. It has two transmissive phototransistor outputs that can detect when an object passes between the two light sources. The unit is hermetically sealed and dustproof and can be used in a wide variety of industrial applications, including controlling motors, detecting objects, positioning in assembly lines, and more. It has a wide detection range from 10 mm to 600 mm and comes with LED indicators. It has a fast response time of 1 ms, making it a reliable and efficient choice for use in industrial settings. With its rugged construction and quick response time, the EE-SX1042 is a great choice for a wide variety of applications.