The Allen-Bradley 440L-R4J0480YD /A GuardShield Type 4 Light Curtain Receiver is a 480mm receiver designed for industrial automation and motion control systems. Made by the well-known brand Allen-Bradley in the United States, this light curtain receiver is a reliable and high-quality product for PLC processors and HMI systems. Its GuardShield Type 4 protection ensures a secure and safe environment for automation applications.