Allen-Bradley 42SRU-6002 Photoswitch Compact Sensor

The Allen‑Bradley 42SRU-6002 is a compact Series B photoswitch that performs non-contact object and surface-change detection, delivering fast, reliable sensing in industrial automation and control environments where physical contact is not desirable or feasible. It supports diffuse or fixed-reflective sensing depending on the model, uses an infrared or visible LED light source, and provides a discrete DC output (NPN or PNP variant) when triggered, powered by a typical 10–30 V DC supply, with LED indicators to show power and output status. The sensor is housed in a compact industrial enclosure for surface or bracket mounting and is designed for industrial environments, offering a fast response time suitable for high-speed conveyance and automated systems. Common applications include conveyor systems, packaging machinery, assembly lines, robotic cells, and other material handling equipment where presence, position, movement, or changes in surface conditions must be detected to drive control logic and prevent jams.