Allen-Bradley 42EF-B1SCBE-A2 Photoelectric Sensor

The Allen-Bradley 42EF-B1SCBE-A2 PhotoSwitch is a RightSight background-suppression PHOTOSWITCH photoelectric sensor in the 42EF family that detects targets at up to 100 mm (3.9 in) using infrared illumination; it uses a 2 m cable for flexible mounting on conveyors, feeders, or machine frames, and its background discrimination helps it ignore clutter behind the target. It operates from 21.6 to 264 V AC/DC, provides a sink-type NPN Power MOSFET output, and delivers a rapid 8.3 ms response time suitable for high-speed lines. Dark Operate Only logic further enhances reliability by triggering on interruption of the beam against dark backgrounds, making it a solid choice for packaging, assembly, and material-handling applications.