Optical System Achieves 1-μm Operating Position Repeatability in this 4-way Switch • No-contact structure for high reliability. • Ceramic materials in measuring part for superior resistance to abrasion. • Two different output types (PNP and NPN) available. • Less abrasion and damage of mechanical contacts compared to switches with contacts, reducing fluctuation in the output. • More compact than previous OMRON models: 40% less mass, 15% lighter across the operating width.