Allen-Bradley 42KB-E2LPSR-Y3 Photoelectric Sensor

The Allen-Bradley 42KB-E2LPSR-Y3 Photoelectric Sensor is a PHOTOSWITCH micro rectangular sensor designed for compact, non-contact object detection in industrial environments. As part of Rockwell Automation’s PHOTOSWITCH family, it detects the presence or absence of parts by emitting a light beam and sensing interruptions along the sensing path, making it well suited for integration on conveyors, pick-and-place assemblies, and packaging machines where space is tight. The micro rectangular form factor enables installation in crowded control panels and machine frames, while the 42KB family designation signals compatibility with Allen-Bradley sensing ecosystems and standard 42KB accessories and mounting options. Use cases typically involve verifying gap presence, counting parts, or detecting small components in tight spaces without mechanical contact. The sensor is designed to operate reliably in industrial environments, contributing to process control and automation workflows that rely on fast, repeatable optical sensing. For technicians and engineers, the 42KB-E2LPSR-Y3 offers a compact, photonic switching solution suitable for machine automation projects within a Rockwell Automation control scheme.