Allen-Bradley 42KB-S2LNSA-A5E63 Photoelectric Switch

The Allen-Bradley 42KB-S2LNSA-A5E63 Photoelectric Switch is a compact Rockwell Automation Photoswitch sensor built in a 30 mm micro rectangular housing with a 2 m cable, designed for reliable presence/absence sensing in tight spaces on automation equipment. This model belongs to the 42KB family, and its lifecycle is listed as Active in the Rockwell catalog, with installation instructions available under 42KB-IN001 to support proper setup and integration. The 42KB line is known for switch-selectable light or dark operation, a feature that helps adapt sensing behavior to varying backgrounds and part colors on production lines. The A5-equipped variant maintains the familiar tight footprint of the 42KB sensors while offering easy connection to standard industrial controllers, making it suitable for machine sensing tasks in packaging, material handling, and automated assembly environments where compact form factor and quick response are essential.