The Allen-Bradley 440L-T4K0480YD is a high-performance emitter unit for the GuardShield Type 4 safety light curtain system. Designed for robust machine safety applications, this transmitter works in conjunction with a corresponding receiver to create an infrared light field for presence sensing. It is engineered to meet global standards for safety, providing reliable hand and arm detection to protect personnel from hazardous machinery. Its compact design and simple mounting options make it ideal for integration into a wide range of industrial environments where operator safety is paramount.