The F3SG-4RA0830-30 is an adjustable safety light curtain photoelectric switch manufactured by Omron. It is designed to be used in a variety of safety applications to detect the presence of a person, object, or machine part. It features narrow beam widths, adjustable background light suppression technology, and a pre-wired connector for easy installation and maintenance. The switch is able to detect a variety of targets from 17mm down to 2mm. Additionally, its narrow beam widths enable it to detect objects that are close to each other without the risk of a false signal. It is also designed to be highly resistant to electrical interference, vibration, and shock providing a dependable and durable safety solution.