The F3SJ-B0305N25 is a "Basic" type safety light curtain from Omron. It is designed for hand protection and provides a high level of machine safety . This model features an NPN output, making it suitable for control systems requiring sinking signals . It supports advanced features such as muting (enabled simply with a Muting Key Cap) and series connection (cascading up to 3 sets), while maintaining a simpler installation process compared to the "Advanced" (F3SJ-A) series .